CapStar Financial (CSTR) 10-Q 8 May 20 2020 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 05, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Trading Symbol	CSTR
Entity Registrant Name	CAPSTAR FINANCIAL HOLDINGS, INC.
Entity Central Index Key	0001676479
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Common Stock, Shares Outstanding		18,307,447
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	001-37886
Entity Tax Identification Number	81-1527911
Entity Address, Address Line One	1201 Demonbreun Street
Entity Address, Address Line Two	Suite 700
Entity Address, City or Town	Nashville
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	37203
City Area Code	615
Local Phone Number	732-6400
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	TN
Entity Interactive Data Current	Yes

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 19,794	$ 17,726
Interest-bearing deposits in financial institutions	71,656	83,368
Federal funds sold		175
Total cash and cash equivalents	91,450	101,269
Securities available-for-sale, at fair value	219,213	213,129
Securities held-to-maturity, fair value of $3,394 and $3,411 at March 31, 2020 and December 31, 2019, respectively	3,306	3,313
Loans held for sale (includes $54,896 and $30,740 measured at fair value at March 31, 2020 and December 31, 2019, respectively)	186,937	168,222
Loans	1,446,835	1,420,102
Less allowance for loan losses	(20,114)	(12,604)
Loans, net	1,426,721	1,407,498
Premises and equipment, net	18,896	19,184
Restricted equity securities	13,573	13,689
Accrued interest receivable	5,786	5,792
Goodwill	37,510	37,510
Core deposit intangible, net	6,498	6,883
Other real estate owned, net	147	1,044
Other assets	62,548	59,668
Total assets	2,072,585	2,037,201
Deposits:
Non-interest-bearing	442,789	312,096
Interest-bearing	547,561	607,211
Savings and money market accounts	472,717	506,692
Time	300,642	303,452
Total deposits	1,763,709	1,729,451
Federal Home Loan Bank advances	10,000	10,000
Other liabilities	23,086	24,704
Total liabilities	1,796,795	1,764,155
Shareholders’ equity:
Additional paid-in capital	206,043	207,083
Retained earnings	46,648	46,218
Accumulated other comprehensive income, net of income tax	4,791	1,383
Total shareholders’ equity	275,790	273,046
Total liabilities and shareholders’ equity	2,072,585	2,037,201
Voting
Shareholders’ equity:
Common stock	$ 18,308	$ 18,362

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Securities held to maturity, fair value	$ 3,394	$ 3,411
Loans held for sale carried at fair value	$ 54,896	$ 30,740
Voting
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	18,307,802	18,361,922
Common stock, shares outstanding	18,307,802	18,361,922

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest income:
Loans, including fees	$ 19,738	$ 20,592
Securities:
Taxable	1,174	1,346
Tax-exempt	321	377
Federal funds sold		19
Restricted equity securities	142	187
Interest-bearing deposits in financial institutions	363	446
Total interest income	21,738	22,967
Interest expense:
Interest-bearing deposits	1,901	1,594
Savings and money market accounts	1,551	1,718
Time deposits	1,481	1,813
Federal funds purchased		4
Securities sold under agreements to repurchase		5
Federal Home Loan Bank advances	144	831
Total interest expense	5,077	5,965
Net interest income	16,661	17,002
Provision for loan losses	7,553	886
Net interest income after provision for loan losses	9,108	16,116
Noninterest income:
Noninterest income	2,253	1,385
Net gain on sale of securities	27	12
Tri-Net fees	599	641
Other noninterest income	1,089	1,014
Total noninterest income	5,874	4,735
Noninterest expense:
Salaries and employee benefits	8,002	8,432
Data processing and software	1,864	1,474
Professional fees	636	543
Occupancy	820	883
Equipment	751	852
Regulatory fees	163	274
Merger related expenses	290	594
Amortization of intangibles	386	430
Other operating	1,299	1,243
Total noninterest expense	14,211	14,725
Income before income taxes	771	6,126
Income tax expense (benefit)	(575)	1,346
Net income	$ 1,346	$ 4,780
Per share information:
Basic net income per share of common stock	$ 0.07	$ 0.27
Diluted net income per share of common stock	$ 0.07	$ 0.25
Weighted average shares outstanding:
Basic	18,392,913	17,783,239
Diluted	18,443,725	18,830,933
Treasury Management And Other Deposit Service Charges
Noninterest income:
Noninterest income	$ 775	$ 798
Mortgage Banking Income
Noninterest income:
Noninterest income	2,253	1,385
Wealth Management Fees
Noninterest income:
Noninterest income	407	306
Interchange and Debit Card Transaction Fees
Noninterest income:
Noninterest income	$ 724	$ 579

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 1,346	$ 4,780
Unrealized gains on securities available-for-sale:
Unrealized holding gains arising during the period	4,203	3,264
Reclassification adjustment for gains included in net income	(27)	(12)
Tax effect	(1,021)	(850)
Net of tax	3,155	2,402
Unrealized losses on cash flow hedges:
Unrealized holding losses arising during the period		(241)
Reclassification adjustment for losses included in net income	253	197
Tax effect		54
Net of tax	253	10
Other comprehensive income	3,408	2,412
Comprehensive income	$ 4,754	$ 7,192

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock, Voting	Common Stock, Nonvoting	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2018	$ 254,379	$ 878	$ 17,592	$ 133	$ 211,789	$ 27,303	$ (3,316)
Beginning balance, shares at Dec. 31, 2018			17,592,160	132,561
Net issuance of restricted common stock	(168)		$ 14		(182)
Net issuance of restricted common stock, shares			13,801
Stock-based compensation expense	344				344
Net exercise of common stock options	1,180		$ 182		998
Net exercise of common stock options, shares			182,002
Repurchase of common stock	(2,431)		$ (155)		(2,276)
Repurchase of common stock, shares			(155,400)
Common and preferred stock dividends declared	(745)					(745)
Net income	4,780					4,780
Other comprehensive income	2,412						2,412
Ending balance at Mar. 31, 2019	259,751	$ 878	$ 17,633	$ 133	210,673	31,338	(904)
Ending balance, shares at Mar. 31, 2019			17,632,563	132,561
Beginning balance at Dec. 31, 2019	273,046		$ 18,362		207,083	46,218	1,383
Beginning balance, shares at Dec. 31, 2019			18,361,922
Net issuance of restricted common stock	(123)		$ 73		(196)
Net issuance of restricted common stock, shares			73,098
Stock-based compensation expense	360				360
Net exercise of common stock options	$ 106		$ 21		85
Net exercise of common stock options, shares	24,613		20,582
Repurchase of common stock	$ (1,437)		$ (148)		(1,289)
Repurchase of common stock, shares			(147,800)
Common and preferred stock dividends declared	(916)					(916)
Net income	1,346					1,346
Other comprehensive income	3,408						3,408
Ending balance at Mar. 31, 2020	$ 275,790		$ 18,308		$ 206,043	$ 46,648	$ 4,791
Ending balance, shares at Mar. 31, 2020			18,307,802

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (Unaudited) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Stockholders Equity [Abstract]
Common and preferred stock, dividends per share	$ 0.05	$ 0.04

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 1,346	$ 4,780
Adjustments to reconcile net income to net cash used in operating activities:
Provision for loan losses	7,553	886
Accretion of discounts on acquired loans and deferred fees	(297)	(559)
Depreciation and amortization	681	737
Net amortization of premiums on investment securities	180	205
Net gain on sale of securities	(27)	(12)
Mortgage banking income	$ (2,253)	$ (1,385)
Type of Revenue [Extensible List]	us-gaap:MortgageBankingMember	us-gaap:MortgageBankingMember
Tri-Net fees	$ (599)	$ (641)
Net gain on sale of loans	(35)	(196)
Net gain on sale of other real estate owned	(37)
Stock-based compensation	360	344
Deferred income tax expense (benefit)	(2,692)	395
Origination of loans held for sale	(226,109)	(130,697)
Proceeds from loans held for sale	210,246	117,471
Cash payments arising from operating leases	(462)	(459)
Net increase in accrued interest receivable and other assets	(741)	(12,979)
Net increase (decrease) in accrued interest payable and other liabilities	(1,365)	7,718
Net cash used in operating activities	(14,251)	(14,392)
Activities in securities available-for-sale:
Purchases	(17,302)	(2,138)
Sales	6,043	9,722
Maturities, prepayments and calls	9,205	5,599
Net redemption (purchase) of restricted equity securities	116	(2,107)
Net increase in loans	(26,515)	(37,327)
Purchase of premises and equipment	(8)	(1,109)
Proceeds from sale of other real estate	1,005
Net cash used in investing activities	(27,456)	(27,360)
Cash flows from financing activities:
Net increase in deposits	34,258	108,794
Proceeds from Federal Home Loan Bank advances	680,000	65,000
Payments on Federal Home Loan Bank advances	(680,000)	(115,000)
Repurchase of common stock	(1,437)	(2,431)
Exercise of common stock options, net of repurchase of restricted shares	(17)	1,012
Common and preferred stock dividends paid	(916)	(745)
Net cash provided by financing activities	31,888	56,630
Net increase (decrease) in cash and cash equivalents	(9,819)	14,878
Cash and cash equivalents at beginning of period	101,269	105,443
Cash and cash equivalents at end of period	91,450	120,321
Supplemental disclosures of cash paid:
Interest paid	5,189	6,034
Income taxes	1,676	356
Supplemental disclosures of noncash transactions:
Transfer of loans to other real estate	71	50
Loans charged off to the allowance for loan losses	$ 172	$ 82

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying unaudited consolidated financial statements as of and for the period ended March 31, 2020 include CapStar Financial Holdings, Inc. and its wholly owned subsidiary, CapStar Bank (the “Bank”, together referred to as the “Company”). Significant intercompany transactions and accounts are eliminated in consolidation. The accompanying unaudited consolidated financial statements have been prepared in accordance with instructions to Form 10-Q and do not include all information and footnotes required by U.S. generally accepted accounting principles (“U.S. GAAP”) for complete financial statements. All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. These unaudited consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and related notes appearing in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan losses, determination of impairment of intangible assets, including goodwill, the valuation of our investment portfolio, deferred tax assets and estimated liabilities. There have been no significant changes to the Company’s critical accounting policies as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. Subsequent Events Accounting Standards Codification (“ASC”) 855, Subsequent Events, establishes general standards of accounting for and disclosure of events that occur after the balance sheet date but before financial statements are issued. The Company evaluated all events or transactions that occurred after March 31, 2020 through the date of the issued financial statements. On April 24, 2020, the Company adopted articles of amendment to its charter whereby the total number of shares of capital stock which the Company has authority to issue was amended to 40,000,000 shares, of which 35,000,000 shares shall be common stock ($1.00 par value per share) and 5,000,000 shares shall be preferred stock ($1.00 par value per share). Aside from the changes to its authorized shares, no further amendments were made to the Company’s charter.

Securities

Securities	3 Months Ended
	Mar. 31, 2020
Investments Debt And Equity Securities [Abstract]
Securities	NOTE 2 – SECURITIES The amortized cost and fair value of securities available-for-sale and held-to-maturity at March 31, 2020 and December 31, 2019 are summarized as follows (in thousands): March 31, 2020 December 31, 2019 Amortized Cost Gross unrealized gains Gross unrealized (losses) Estimated fair value Amortized Cost Gross unrealized gains Gross unrealized (losses) Estimated fair value Securities available-for-sale: U. S. government agency securities $ 11,620 $ 466 $ — $ 12,086 $ 10,421 $ 4 $ (94 ) $ 10,331 State and municipal securities 43,146 1,995 (9 ) 45,132 44,053 1,927 (20 ) 45,960 Mortgage-backed securities 136,506 5,215 (172 ) 141,549 137,305 1,834 (460 ) 138,679 Asset-backed securities 3,325 — (282 ) 3,043 3,325 — (128 ) 3,197 Other debt securities 17,254 358 (209 ) 17,403 14,839 141 (18 ) 14,962 Total $ 211,851 $ 8,034 $ (672 ) $ 219,213 $ 209,943 $ 3,906 $ (720 ) $ 213,129 Securities held-to-maturity: State and municipal securities $ 3,306 $ 88 $ — $ 3,394 $ 3,313 $ 98 $ — $ 3,411 Total $ 3,306 $ 88 $ — $ 3,394 $ 3,313 $ 98 $ — $ 3,411 Security fair values are established by an independent pricing service as of the dates indicated. The difference between amortized cost and fair value reflects current interest rates and represents the potential gain (loss) had the portfolio been liquidated on those dates. Security gains (losses) are realized only in the event of dispositions prior to maturity or other-than-temporary impairment. Securities with unrealized losses as of March 31, 2020 and December 31, 2019, and the length of time they were in continuous loss positions as of such dates are as follows (in thousands): Less than 12 months 12 months or more Total March 31, 2020 Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses U. S. government agency securities $ — $ — $ — $ — $ — $ — State and municipal securities 1,618 (3 ) 814 (6 ) 2,432 (9 ) Mortgage-backed securities 9,324 (108 ) 1,644 (64 ) 10,968 (172 ) Asset-backed securities — — 3,043 (282 ) 3,043 (282 ) Other debt securities 1,974 (26 ) 1,320 (183 ) 3,294 (209 ) Total temporarily impaired securities $ 12,916 $ (137 ) $ 6,821 $ (535 ) $ 19,737 $ (672 ) December 31, 2019 U. S. government agency securities $ 6,694 $ (51 ) $ 1,637 $ (43 ) $ 8,331 $ (94 ) State and municipal securities 2,356 (12 ) 814 (8 ) 3,170 (20 ) Mortgage-backed securities 30,570 (136 ) 21,364 (324 ) 51,934 (460 ) Asset-backed securities — — 3,197 (128 ) 3,197 (128 ) Other debt securities 3,012 (16 ) 1,502 (2 ) 4,514 (18 ) Total temporarily impaired securities $ 42,632 $ (215 ) $ 28,514 $ (505 ) $ 71,146 $ (720 ) As noted in the table above, as of March 31, 2020, the Company had gross unrealized losses of $0.7 million in its investment securities portfolio. The unrealized losses associated with these investment securities are driven by changes in interest rates and are recorded as a component of equity. These investment securities will continue to be monitored as a part of our ongoing impairment analysis. Management evaluates the financial performance of the issuers on a quarterly basis to determine if it is probable that the issuers can make all contractual principal and interest payments. If a shortfall in future cash flows is identified, a credit loss will be deemed to have occurred and will be recognized as a charge to earnings and a new cost basis for the security will be established. Because the Company currently does not intend to sell any investment securities that have an unrealized loss at March 31, 2020, and it is not more-likely-than-not that we will be required to sell these investment securities before recovery of their amortized cost bases, which may be at maturity, we do not consider these securities to be other-than-temporarily impaired at March 31, 2020. Securities with a carrying value of $69.3 million at March 31, 2020 were pledged to collateralize public deposits, derivative positions and Federal Home Loan Bank advances. Results from sales of securities were as follows (in thousands): Three Months Ended Three Months Ended March 31, 2020 March 31, 2019 Proceeds $ 6,043 $ 9,722 Gross gains 35 70 Gross losses (8 ) (58 ) The amortized cost and fair value of securities at March 31, 2020, by contractual maturity, are shown below (in thousands). Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. Available-for-sale Held-to-maturity Amortized cost Estimated fair value Amortized cost Estimated fair value Due in less than one year $ 11,692 $ 11,825 $ 880 $ 882 Due one to five years 29,953 30,859 2,426 2,512 Due five to ten years 29,209 30,740 — — Due beyond ten years 1,166 1,197 — — Mortgage-backed securities 136,506 141,549 — — Asset-backed securities 3,325 3,043 — — $ 211,851 $ 219,213 $ 3,306 $ 3,394

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Loans and Allowance for Loan and Lease Losses	NOTE 3 – LOANS AND ALLOWANCE FOR LOAN LOSSES A summary of the loan portfolio as of March 31, 2020 and December 31, 2019 follows (in thousands): March 31, 2020 December 31, 2019 Commercial real estate $ 544,822 $ 559,899 Consumer real estate 248,243 256,097 Construction and land development 141,087 143,111 Commercial and industrial 447,311 394,408 Consumer 27,739 28,426 Other 37,633 38,161 Total 1,446,835 1,420,102 Allowance for loan losses (20,114 ) (12,604 ) $ 1,426,721 $ 1,407,498 The adequacy of the allowance for loan losses (“ALL”) is assessed at the end of each quarter. The ALL includes a specific component related to loans that are individually evaluated for impairment and a general component related to loans that are segregated into homogenous pools and collectively evaluated for impairment. The ALL factors applied to these pools are an estimate of probable incurred losses based on management’s evaluation of historical net losses from loans with similar characteristics, which are adjusted by management to reflect current events, trends, and conditions. The adjustments include consideration of the following: changes in lending policies and procedures, economic conditions, nature and volume of the portfolio, experience of lending management, volume and severity of past due loans, quality of the loan review system, value of underlying collateral for collateral dependent loans, concentrations, and other external factors. The Company’s evaluation of other external factors included consideration of the novel coronavirus (“COVID-19”) global pandemic and the resulting impact on the Company’s loan portfolio as of March 31, 2020, which is largely uncertain due to rapidly evolving conditions. The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes all commercial loans, and consumer relationships with an outstanding balance greater than $500,000, individually and assigns each loan a risk rating. This analysis is performed on a continual basis by the relationship managers and credit department personnel. On at least an annual basis an independent party performs a formal credit risk review of a sample of the loan portfolio. Among other things, this review assesses the appropriateness of the loan’s risk rating. The Company uses the following definitions for risk ratings: Special Mention – A special mention asset possesses deficiencies or potential weaknesses deserving of management’s attention. If uncorrected, such weaknesses or deficiencies may expose the Company to an increased risk of loss in the future. Substandard – A substandard asset is inadequately protected by the current sound net worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Company will sustain some loss if deficiencies are not corrected. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual assets classified substandard. Doubtful – A doubtful asset has all weaknesses inherent in one classified substandard, with the added characteristic that weaknesses make collection or liquidation in full, on the basis of existing facts, conditions, and values, highly questionable and improbable. The probability of loss is extremely high, but certain important and reasonable specific pending factors which may work to the advantage and strengthening of the asset exist, therefore, its classification as an estimated loss is deferred until a more exact status may be determined. Pending factors include proposed merger, acquisition or liquidation procedures, capital injection, perfecting liens on additional collateral, and refinancing plans. Loans not falling into the criteria above are considered to be pass-rated loans. The Company utilizes six loan grades within the pass risk rating. The following tables present the loan balances by category as well as risk rating (in thousands): Non-impaired Loans March 31, 2020 Pass Special Mention Substandard Total Non-impaired Total Loans Total Commercial real estate $ 539,282 $ 909 $ 3,264 $ 543,455 $ 1,367 $ 544,822 Consumer real estate 245,617 497 1,133 247,247 996 248,243 Construction and land development 140,954 — 21 140,975 112 141,087 Commercial and industrial 419,247 18,380 6,332 443,959 3,352 447,311 Consumer 27,702 5 13 27,720 19 27,739 Other 37,633 — — 37,633 — 37,633 Total $ 1,410,435 $ 19,791 $ 10,763 $ 1,440,989 $ 5,846 $ 1,446,835 December 31, 2019 Commercial real estate $ 551,929 $ 915 $ 4,438 $ 557,282 $ 2,617 $ 559,899 Consumer real estate 252,952 503 1,551 255,006 1,091 256,097 Construction and land development 142,978 — 16 142,994 117 143,111 Commercial and industrial 370,475 14,341 8,241 393,057 1,351 394,408 Consumer 28,382 6 15 28,403 23 28,426 Other 38,161 — — 38,161 — 38,161 Total $ 1,384,877 $ 15,765 $ 14,261 $ 1,414,903 $ 5,199 $ 1,420,102 None of the Company’s loans had a risk rating of “Doubtful” as of March 31, 2020 or December 31, 2019. The following table details the changes in the ALL for the three months ended March 31, 2020 and 2019 (in thousands): Commercial real estate Consumer real estate Construction and land development Commercial and industrial Consumer Other Total Three Months Ended March 31, 2020 Balance, beginning of year $ 3,599 $ 1,231 $ 2,058 $ 5,074 $ 222 $ 420 $ 12,604 Charged-off loans (3 ) — — (88 ) (27 ) (54 ) (172 ) Recoveries — 2 — 102 19 6 129 Provision for loan losses 587 180 412 6,311 20 43 7,553 Balance, end of period $ 4,183 $ 1,413 $ 2,470 $ 11,399 $ 234 $ 415 $ 20,114 Three Months Ended March 31, 2019 Balance, beginning of year $ 3,309 $ 1,005 $ 2,431 $ 5,036 $ 105 $ 227 $ 12,113 Charged-off loans — — — — (37 ) (45 ) (82 ) Recoveries 6 3 — 2 18 13 42 Provision for loan losses 199 9 (65 ) 486 53 204 886 Balance, end of period $ 3,514 $ 1,017 $ 2,366 $ 5,524 $ 139 $ 399 $ 12,959 A breakdown of the ALL and the loan portfolio by loan category at March 31, 2020 and December 31, 2019 follows (in thousands): Commercial real estate Consumer real estate Construction and land development Commercial and industrial Consumer Other Total March 31, 2020 Allowance for Loan Losses: Collectively evaluated for impairment $ 4,183 $ 1,413 $ 2,397 $ 10,755 $ 234 $ 415 $ 19,397 Individually evaluated for impairment — — 73 644 — — 717 Acquired with deteriorated credit quality — — — — — — — Balances, end of period $ 4,183 $ 1,413 $ 2,470 $ 11,399 $ 234 $ 415 $ 20,114 Loans: Collectively evaluated for impairment $ 543,455 $ 247,247 $ 140,975 $ 443,959 $ 27,720 $ 37,633 $ 1,440,989 Individually evaluated for impairment 1,258 436 109 2,468 4 — 4,275 Acquired with deteriorated credit quality 109 560 3 884 15 — 1,571 Balances, end of period $ 544,822 $ 248,243 $ 141,087 $ 447,311 $ 27,739 $ 37,633 $ 1,446,835 December 31, 2019 Allowance for Loan Losses: Collectively evaluated for impairment $ 3,599 $ 1,231 $ 2,058 $ 5,074 $ 222 $ 420 $ 12,604 Individually evaluated for impairment — — — — — — — Acquired with deteriorated credit quality — — — — — — — Balances, end of period $ 3,599 $ 1,231 $ 2,058 $ 5,074 $ 222 $ 420 $ 12,604 Loans: Collectively evaluated for impairment $ 557,282 $ 255,006 $ 142,994 $ 393,057 $ 28,403 $ 38,161 $ 1,414,903 Individually evaluated for impairment 2,507 483 112 487 5 — 3,594 Acquired with deteriorated credit quality 110 608 5 864 18 — 1,605 Balances, end of period $ 559,899 $ 256,097 $ 143,111 $ 394,408 $ 28,426 $ 38,161 $ 1,420,102 The following table presents the allocation of the ALL for each respective loan category with the corresponding percentage of the ALL in each category to total loans, net of deferred fees as of March 31, 2020 and December 31, 2019 (dollars in thousands): March 31, 2020 December 31, 2019 Amount Percent of total loans Amount Percent of total loans Commercial real estate $ 4,183 0.29 % $ 3,599 0.25 % Consumer real estate 1,413 0.10 % 1,231 0.09 % Construction and land development 2,470 0.17 % 2,058 0.14 % Commercial and industrial 11,399 0.79 % 5,074 0.36 % Consumer 234 0.01 % 222 0.02 % Other 415 0.03 % 420 0.03 % Total allowance for loan losses $ 20,114 1.39 % $ 12,604 0.89 % The following table presents the Company’s impaired loans that were evaluated for specific loss allowance as of March 31, 2020 and December 31, 2019 (in thousands): March 31, 2020 December 31, 2019 Recorded investment Unpaid principal balance Related allowance Recorded investment Unpaid principal balance Related allowance With no related allowance recorded: Commercial real estate $ 1,367 $ 1,430 $ — $ 2,617 $ 2,621 $ — Consumer real estate 996 1,226 — 1,091 1,327 — Construction and land development 3 13 — 117 132 — Commercial and industrial 1,028 1,862 — 1,351 2,173 — Consumer 19 37 — 23 41 — Other — — — — — — Subtotal 3,413 4,568 — 5,199 6,294 — With an allowance recorded: Commercial real estate — — — — — — Consumer real estate — — — — — — Construction and land development 109 114 73 — — — Commercial and industrial 2,324 2,326 644 — — — Consumer — — — — — — Other — — — — — — Subtotal 2,433 2,440 717 — — — Total $ 5,846 $ 7,008 $ 717 $ 5,199 $ 6,294 $ — The following presents information related to the average recorded investment and interest income recognized on impaired loans for the three months ended March 31, 2020 and 2019 (in thousands): Three Months Ended Three Months Ended March 31, 2020 March 31, 2019 Average recorded investment Interest income recognized Average recorded investment Interest income recognized With no related allowance recorded: Commercial real estate $ 2,044 $ 31 $ 1,381 $ 16 Consumer real estate 1,004 10 938 — Construction and land development 3 — 8 — Commercial and industrial 1,191 52 724 — Consumer 20 1 39 — Other — — — — Subtotal 4,262 94 3,090 16 With an allowance recorded: Commercial real estate — — — — Consumer real estate — — — — Construction and land development 110 — — — Commercial and industrial 3,349 32 777 — Consumer — — — — Other — — — — Subtotal 3,459 32 777 — Total $ 7,721 $ 126 $ 3,867 $ 16 There was no interest income recognized on a cash basis for impaired loans during the three months ended March 31, 2020 or 2019. The following table presents the aging of the recorded investment in past due loans as of March 31, 2020 and December 31, 2019 by class of loans (in thousands): 30 - 59 60 - 89 Greater Than Days Days 89 Days Total Loans Not March 31, 2020 Past Due Past Due Past Due Past Due Past Due Total Commercial real estate $ 214 $ 441 $ 58 $ 713 $ 544,109 $ 544,822 Consumer real estate 3,253 124 762 4,139 244,104 248,243 Construction and land development 1,051 — — 1,051 140,036 141,087 Commercial and industrial 2,499 — 410 2,909 444,402 447,311 Consumer 45 21 6 72 27,667 27,739 Other 20 — — 20 37,613 37,633 Total $ 7,082 $ 586 $ 1,236 $ 8,904 $ 1,437,931 $ 1,446,835 December 31, 2019 Commercial real estate $ 372 $ — $ — $ 372 $ 559,527 $ 559,899 Consumer real estate 3,642 474 643 4,759 251,338 256,097 Construction and land development 653 15 — 668 142,443 143,111 Commercial and industrial 1,277 8 440 1,725 392,683 394,408 Consumer 67 — 33 100 28,326 28,426 Other — — — — 38,161 38,161 Total $ 6,011 $ 497 $ 1,116 $ 7,624 $ 1,412,478 $ 1,420,102 The following table presents the recorded investment in non-accrual loans, past due loans over 89 days and accruing and troubled debt restructurings (“TDR”) by class of loans as of March 31, 2020 and December 31, 2019 (in thousands): Past Due Over 89 Troubled Debt Non-Accrual Days and Accruing Restructurings March 31, 2020 Commercial real estate $ — $ 58 $ 1,256 Consumer real estate 844 291 — Construction and land development 112 — — Commercial and industrial 2,691 50 50 Consumer 11 — — Other — — — Total $ 3,658 $ 399 $ 1,306 December 31, 2019 Commercial real estate $ — $ — $ 2,446 Consumer real estate 894 12 — Construction and land development 117 — — Commercial and industrial 440 — 271 Consumer 13 26 — Other — — — Total $ 1,464 $ 38 $ 2,717 As of March 31, 2020 and December 31, 2019, all loans classified as nonperforming were deemed to be impaired. As of March 31, 2020 and December 31, 2019, the Company had a recorded investment in TDR of $1.3 million and $2.7 million, respectively. The Company had no specific allowance for those loans at March 31, 2020 or December 31, 2019 and there were no commitments to lend additional amounts. Loans accounted for as TDR include modifications from original terms such as those due to bankruptcy proceedings, certain modifications of amortization periods or extended suspension of principal payments due to customer financial difficulties. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification. This evaluation is performed under the Bank’s loan policy. Loans accounted for as TDR are individually evaluated for impairment. There were no new TDR identified during the three months ended March 31, 2020 or 2019. There were no TDR for which there was a payment default within twelve months following the modification during the three months ended March 31, 2020 or 2019. A loan is considered to be in payment default once it is 30 days contractually past due under the modified terms. Acquired Loans The following table presents changes in the carrying value of purchased credit impaired (“PCI”) loans (in thousands): Three Months Ended March 31, 2020 Balance at beginning of period $ 1,605 Change due to payments received and accretion (34 ) Change due to loan charge-offs — Other — Balance at end of period $ 1,571 The following table presents changes in the accretable yield for PCI loans (in thousands): Three Months Ended March 31, 2020 Balance at beginning of period $ 915 Accretion (34 ) Reclassification from (to) nonaccretable difference — Other, net (4 ) Balance at end of period $ 877 PCI loans had no impact on the ALL for the three months ended March 31, 2020 or 2019.

Premises and Equipment

Premises and Equipment	3 Months Ended
	Mar. 31, 2020
Property Plant And Equipment [Abstract]
Premises and Equipment	NOTE 4 – PREMISES AND EQUIPMENT The Company leases certain premises and equipment under operating leases. At March 31, 2020, the Company had lease liabilities totaling $12.2 million and right-of-use assets totaling $11.4 million related to these leases. Lease liabilities and right-of-use assets are reflected in other liabilities and other assets, respectively. For the three months ended March 31, 2020, the weighted average remaining lease term for operating leases was 10.2 years and the weighted average discount rate used in the measurement of operating lease liabilities was 3.52%. Lease costs were as follows (in thousands): Three Months Ended March 31, 2020 2019 Operating lease cost $ 478 $ 482 Short-term lease cost — — Variable lease cost — — Total lease cost $ 478 $ 482 There were no sale and leaseback transactions, leveraged leases, or lease transactions with related parties during the three months ended March 31, 2020 or 2019. A maturity analysis of operating lease liabilities and reconciliation of the undiscounted cash flows to the total operating lease liability is as follows (in thousands): March 31, 2020 Lease payments due: 2020 $ 1,174 2021 1,590 2022 1,476 2023 1,425 2024 1,130 2025 and thereafter 7,710 Total undiscounted cash flows 14,505 Discount on cash flows (2,333 ) Total lease liability $ 12,172

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances	3 Months Ended
	Mar. 31, 2020
Federal Home Loan Banks [Abstract]
Federal Home Loan Bank Advances	NOTE 5 – FEDERAL HOME LOAN BANK ADVANCES The Company had outstanding borrowings totaling $10.0 million at March 31, 2020 and December 31, 2019, respectively, via various advances. These advances are non-callable; interest payments are due monthly, with principal due at maturity. The following is a summary of the contractual maturities and average effective rates of outstanding advances (dollars in thousands): March 31, 2020 December 31, 2019 Year Amount Interest Rates Amount Interest Rates 2020 $ 10,000 1.37 % $ 10,000 2.05 % 2021 — — — — 2022 — — — — 2023 — — — — 2024 — — — — Thereafter — — — — Total $ 10,000 1.37 % $ 10,000 2.05 % Advances from the FHLB are collateralized by investment securities with a market value of $3.2 million, FHLB stock and certain commercial and residential real estate mortgage loans totaling $663.5 million under a blanket mortgage collateral agreement. At March 31, 2020, the amount of available credit from the FHLB totaled $195.4 million.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2020
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	NOTE 6 – ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The following were changes in accumulated other comprehensive income (loss) by component, net of tax, for the periods ended March 31, 2020 and 2019 (in thousands): Unrealized Gains Gains and and Losses Losses on on Available Cash Flow for Sale Three Months Ended March 31, 2020 Hedges Securities Total Beginning Balance $ (2,679 ) $ 4,062 $ 1,383 Other comprehensive income before reclassification — 3,175 3,175 Amounts reclassified from accumulated other comprehensive income 253 (20 ) 233 Net current period other comprehensive income 253 3,155 3,408 Ending Balance $ (2,426 ) $ 7,217 $ 4,791 Three Months Ended March 31, 2019 Beginning Balance $ (2,636 ) $ (680 ) $ (3,316 ) Other comprehensive income before reclassification (178 ) 2,411 2,233 Amounts reclassified from accumulated other comprehensive income 188 (9 ) 179 Net current period other comprehensive income 10 2,402 2,412 Ending Balance $ (2,626 ) $ 1,722 $ (904 ) The following were significant amounts reclassified out of each component of accumulated other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 (in thousands): Three Months Three Months Affected Line Item Details about Accumulated Other Ended Ended in the Statement Where Comprehensive Income Components March 31, 2020 March 31, 2019 Net Income is Presented Realized losses on cash flow hedges $ (201 ) $ (110 ) Interest expense - money market (52 ) (87 ) Interest expense - Federal Home Loan Bank advances — 9 Income tax benefit $ (253 ) $ (188 ) Net of tax Realized gains on available-for-sale securities $ 27 $ 12 Net gain on sale of securities (7 ) (3 ) Income tax expense $ 20 $ 9 Net of tax

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 7 – INCOME TAXES The Company’s effective tax rate for the three months ended March 31, 2020 was -74.6% compared to 22.0% for the three months ended March 31, 2019. The effective tax rate compared favorably to the statutory federal rate of 21% and Tennessee excise tax rate of 6.5% primarily due to the enactment of new Net Operating Loss (“NOL”) provisions under the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”). The CARES act permits NOL’s arising in taxable years beginning after December 31, 2017 and before January 1, 2021 to be carried back five taxable years. This enabled the Company to carry back losses incurred during the taxable year 2018 to prior years with a higher statutory tax rate, creating a permanent tax rate benefit. As a result, the Company recorded an income tax benefit of $0.8 million related to the permanent tax rate benefit during the period ended March 31, 2020. In addition to the permanent tax rate benefit, the effective tax rate compared favorably to the statutory rate due to investments in qualified municipal securities, company owned life insurance, state tax credits, net of the effect of certain non-deductible expenses and the recognition of excess tax benefits related to stock compensation.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 8 – COMMITMENTS AND CONTINGENCIES In the normal course of business, the Company has outstanding commitments and contingent liabilities, such as commitments to extend credit and standby letters of credit, which are not included in the accompanying financial statements. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instruments for commitments to extend credit and standby letters of credit is represented by the contractual or notional amount of those instruments. The Company uses the same credit policies in making such commitments as it does for instruments that are included in the balance sheet. The following table sets forth outstanding financial instruments whose contract amounts represent credit risk as of March 31, 2020 and December 31, 2019 (in thousands): Contract or notional amount March 31, 2020 December 31, 2019 Financial instruments whose contract amounts represent credit risk: Unused commitments to extend credit $ 657,182 $ 672,933 Standby letters of credit 9,893 9,634 Total $ 667,075 $ 682,567 The Company is party to litigation and claims arising in the normal course of business. Management believes that the liabilities, if any, arising from such litigation and claims as of March 31, 2020, will not have a material impact on the financial statements of the Company.

Derivatives

Derivatives	3 Months Ended
	Mar. 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives	NOTE 9 – DERIVATIVES The Company utilizes interest rate swap agreements as part of its asset liability management strategy to help manage its interest rate risk position. The notional amount of the interest rate swaps does not represent amounts exchanged by the parties. The amount exchanged is determined by reference to the notional amount and the other terms of the individual interest rate swap agreements. Interest Rate Swaps Designated as Cash Flow Hedges There were no interest rate swaps designated as cash flow hedges as of March 31, 2020 and December 31, 2019. The Company terminated an interest rate swap during 2019, which resulted in a termination fee of $1.5 million. Cash flow swaps that have been terminated resulting in cash settlement equal to previously unrealized gains or losses are included in accumulated other comprehensive income and are being amortized to net income over the remaining contractual terms of the swaps. Other Interest Rate Swaps The Company enters into swaps to facilitate customer transactions and meet their financing needs. Upon entering into these transactions the Company enters into offsetting positions with large U.S. financial institutions in order to minimize risk to the Company. A summary of the Company’s customer related interest rate swaps was as follows (in thousands): March 31, 2020 December 31, 2019 Notional Estimated Notional Estimated amount fair value amount fair value Interest rate swap agreements: Pay fixed/receive variable swaps $ 44,670 $ (2,684 ) $ 45,053 $ (926 ) Pay variable/receive fixed swaps 44,670 2,684 45,053 926 Total $ 89,340 $ — $ 90,106 $ — Mortgage Banking Derivatives The Company enters into various derivative agreements with customers in the form of interest-rate lock commitments which are commitments to originate mortgage loans whereby the interest rate on the loan is determined prior to funding and the customers have locked into that interest rate. The derivatives are valued using a model that utilizes market interest rates and other unobservable inputs. Changes in the fair value of these commitments due to fluctuations in interest rates that are to be originated to our loans held for sale portfolio are economically hedged through the use of forward sale commitments of mortgage-backed securities. The gains and losses arising from this derivative activity are reflected in current period earnings under mortgage banking income. Interest rate lock commitments are valued using a model with significant unobservable market parameters. Forward sale commitments are valued based on quoted prices for similar assets in an active market with inputs that are observable. The net gains (losses) relating to mortgage banking derivative instruments included in mortgage banking income were as follows (dollars in thousands): Three Months Ended March 31, 2020 Mortgage loan interest rate lock commitments $ 1,192 Mortgage-backed securities forward sales commitments (1,687 ) Total $ (495 ) There were no gains or losses relating to mortgage banking derivative instruments for the three months ended March 31, 2019. The amount and fair value of mortgage banking derivatives included in the consolidated balance sheets was as follows (dollars in thousands): March 31, 2020 December 31, 2019 Notional Estimated Notional Estimated amount fair value amount fair value Included in other assets: Mortgage loan interest rate lock commitments $ 118,310 $ 1,840 $ 44,694 $ 648 Included in other liabilities: Mortgage-backed securities forward sales commitments $ 85,500 $ 1,836 $ 38,500 $ 148

Stock Options and Restricted Sh

Stock Options and Restricted Shares	3 Months Ended
	Mar. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Options and Restricted Shares	NOTE 10 – STOCK OPTIONS AND RESTRICTED SHARES During 2008, the board of directors of the Bank approved the CapStar Bank 2008 Stock Incentive Plan. Following the formation of CapStar Financial Holdings, Inc. in 2016, and in connection with the Share Exchange, the outstanding awards of restricted stock and stock options under the CapStar Bank 2008 Stock Incentive Plan were exchanged for similar awards of restricted stock and stock options issued by CapStar Financial Holdings, Inc. under the CapStar Financial Holdings, Inc. Stock Incentive Plan (the “Plan”), which the board of directors adopted in 2016. The Stock Incentive Plan provides for the grant of stock-based incentives, including stock options, restricted stock units, performance awards and restricted stock, to employees, directors and service providers that are subject to forfeiture until vesting conditions have been satisfied by the award recipient under the terms of the award. The Plan is intended to help align the interests of employees and our shareholders and reward our employees for improved Company performance. The Plan reserved 1,569,475 shares of stock for issuance of stock incentives. Stock incentives include both restricted share and stock option grants. During 2018, the board of directors approved the addition of 400,000 shares of stock for issuance of stock incentives under the Plan. Total shares issuable under the plan were 301,921 at March 31, 2020. The Company has recognized stock-based compensation expense, within salaries and employee benefits for employees, and within other non-interest expense for directors, in the consolidated statements of income as follows (in thousands): Three Months Ended March 31, 2020 2019 Stock-based compensation expense before income taxes $ 360 $ 344 Less: deferred tax benefit (94 ) (90 ) Reduction of net income $ 266 $ 254 Restricted Shares Compensation expense is recognized over the vesting period of the awards based on the fair value of the stock at the issue date. The fair value of each restricted stock grant is based on valuations performed by independent consultants. The recipients have the right to vote and receive dividends but cannot sell, transfer, assign, pledge, hypothecate, or otherwise encumber the restricted stock until the shares have vested. Restricted shares fully vest on the third anniversary of the grant date. A summary of the changes in the Company’s nonvested restricted shares for the three months ended March 31, 2020 follows: Weighted Average Restricted Grant Date Nonvested Shares Shares Fair Value Nonvested at beginning of period 84,697 $ 17.44 Granted 83,493 14.42 Vested (41,886 ) 16.61 Forfeited (2,657 ) 15.66 Nonvested at end of period 123,647 $ 15.72 As of March 31, 2020, there was $1.5 million of unrecognized compensation cost related to nonvested shares granted under the Plan. The cost is expected to be recognized over a weighted-average period of 1.8 years. The total fair value of shares vested during the three months ended March 31, 2020 and 2019 was $0.6 million and $0.8 million, respectively. Stock Options Option awards are generally granted with an exercise price equal to the fair value of the Company’s common stock at the date of grant. Option awards generally have a three year vesting period and a ten year contractual term. The fair value of each option grant is estimated on the date of grant using the Black Scholes option pricing model. There were no options granted in 2020. The Company granted 50,000 options during 2019. The fair value of options granted during 2019 was determined using the following weighted average assumptions as of the grant date. 2019 Dividend yield 1.35 % Expected term (in years) 6.50 Expected stock price volatility 29.55 % Risk-free interest rate 2.25 % A summary of the activity in stock options for the three months ended March 31, 2020 follows: Weighted Weighted Average Average Remaining Exercise Contractual Shares Price Term (years) Outstanding at beginning of period 271,202 $ 11.22 Granted — — Exercised (24,613 ) 6.75 Forfeited or expired (20,000 ) 10.92 Outstanding at end of period 226,589 $ 11.73 5.4 Fully vested and expected to vest 226,589 $ 11.73 5.4 Exercisable at end of period 176,589 $ 10.85 4.4 Information related to stock options during each year follows: 2020 2019 Intrinsic value of options exercised $ 188,662 $ 1,733,087 Cash received from option exercises 105,847 1,179,923 Tax benefit realized from option exercises 16,524 15,411 Weighted average fair value of options granted — — As of March 31, 2020, there was $0.2 million of unrecognized compensation cost related to nonvested stock options granted under the Plan. The cost is expected to be recognized over a weighted-average period of 2.1 years.

Regulatory Capital Requirements

Regulatory Capital Requirements	3 Months Ended
	Mar. 31, 2020
Banking And Thrift [Abstract]
Regulatory Capital Requirements	NOTE 11 – REGULATORY CAPITAL REQUIREMENTS The Company and the Bank are subject to regulatory capital requirements administered by the Federal Reserve and the Bank is also subject to the regulatory capital requirements of the Tennessee Department of Financial Institutions. Failure to meet capital requirements can initiate certain mandatory – and possibly additional discretionary – actions by regulators that could, in that event, have a material adverse effect on the institutions’ financial statements. The relevant regulations require the Company and the Bank to meet specific capital adequacy guidelines that involve quantitative measures of their assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting principles. The capital classifications of the Company and the Bank are also subject to qualitative judgments by their regulators about components, risk weightings, and other factors. Those qualitative judgments could also affect the capital status of the Company and the Bank and the amount of dividends the Company and the Bank may distribute. The final rules implementing the Basel Committee on Banking Supervision’s capital guidelines for U.S. banks (Basel III rules) became effective for the Bank on January 1, 2015 with full compliance with all of the requirements being phased in over a multi-year schedule, and fully phased in by January 1, 2019. The net unrealized gain or loss on available for sale securities is not included in computing regulatory capital. Management believes as of March 31, 2020, the Company and the Bank met all regulatory capital adequacy requirements to which they are subject. The Company’s and the Bank’s capital amounts and ratios as of March 31, 2020 and December 31, 2019 are presented in the following table (dollars in thousands). Actual Minimum capital requirement (1) Minimum to be well-capitalized (2) Amount Ratio Amount Ratio Amount Ratio At March 31, 2020: Total capital to risk-weighted assets: CapStar Financial Holdings, Inc. $ 245,991 13.68 % $ 143,806 8.00 % N/A N/A CapStar Bank 234,048 13.02 143,757 8.00 $ 179,696 10.00 Tier I capital to risk-weighted assets: CapStar Financial Holdings, Inc. 225,698 12.56 107,854 6.00 N/A N/A CapStar Bank 213,755 11.90 107,818 6.00 143,757 8.00 Common equity Tier 1 capital to risk weighted assets: CapStar Financial Holdings, Inc. 225,698 12.56 80,891 4.50 N/A N/A CapStar Bank 197,255 10.98 80,863 4.50 116,802 6.50 Tier I capital to average assets: CapStar Financial Holdings, Inc. 225,698 11.23 80,379 4.00 N/A N/A CapStar Bank 213,755 10.64 80,346 4.00 100,432 5.00 At December 31, 2019: Total capital to risk-weighted assets: CapStar Financial Holdings, Inc. $ 237,857 13.45 % $ 141,436 8.00 % N/A N/A CapStar Bank 224,443 12.70 141,388 8.00 $ 176,735 10.00 Tier I capital to risk-weighted assets: CapStar Financial Holdings, Inc. 225,074 12.73 106,077 6.00 N/A N/A CapStar Bank 211,660 11.98 106,041 6.00 141,388 8.00 Common equity Tier 1 capital to risk weighted assets: CapStar Financial Holdings, Inc. 225,074 12.73 79,558 4.50 N/A N/A CapStar Bank 195,160 11.04 79,531 4.50 114,878 6.50 Tier I capital to average assets: CapStar Financial Holdings, Inc. 225,074 11.37 79,201 4.00 N/A N/A CapStar Bank 211,660 10.70 79,150 4.00 98,938 5.00 (1) For the calendar year 2020, the Company must maintain a capital conservation buffer of Tier 1 common equity capital in excess of minimum risk-based capital ratios by at least 2.5% to avoid limits on capital distributions and certain discretionary bonus payments to executive officers and similar employees. (2) For the Company to be well-capitalized, the Bank must be well-capitalized and the Company must not be subject to any written agreement, order, capital directive, or prompt corrective action directive issued by the Federal Reserve to meet and maintain a specific capital level for any capital measure.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 12 – EARNINGS PER SHARE The following is a summary of the basic and diluted earnings per share calculation for the three months ended March 31, 2020 and 2019 (in thousands except share data): Three Months Ended March 31, 2020 2019 Basic net income per share calculation: Numerator – Net income $ 1,346 $ 4,780 Denominator – Average common shares outstanding 18,392,913 17,783,239 Basic net income per share $ 0.07 $ 0.27 Diluted net income per share calculation: Numerator – Net income $ 1,346 $ 4,780 Denominator – Average common shares outstanding 18,392,913 17,783,239 Dilutive shares contingently issuable 50,812 1,047,694 Average diluted common shares outstanding 18,443,725 18,830,933 Diluted net income per share $ 0.07 $ 0.25

Fair Value

Fair Value	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value	NOTE 13 – FAIR VALUE Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are three levels of inputs that may be used to measure fair values: Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. Level 2: Significant observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. The Bank used the following methods and significant assumptions to estimate fair value: Investment Securities Derivatives-Interest Rate Swaps Impaired Loans Other Real Estate Owned Loans Held For Sale Derivatives-Mortgage Loan Interest Rate Lock Commitments Derivatives-Mortgage-Backed Securities Forward Sales Commitments Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands): Fair value measurements at March 31, 2020 Quoted prices in active Significant markets for other Significant identical observable unobservable Carrying assets inputs inputs Value (Level 1) (Level 2) (Level 3) Assets: Securities available-for-sale: U.S. government-sponsored agencies $ 12,086 $ — $ 12,086 $ — Obligations of states and political subdivisions 45,132 — 45,132 — Mortgage-backed securities-residential 141,549 — 141,549 — Asset-backed securities 3,043 — 3,043 — Other debt securities 17,403 — 17,403 — Loans held for sale 54,896 — 54,896 — Derivative assets: Non-hedging derivatives: Interest rate swaps - customer related 2,684 — 2,684 — Mortgage loan interest rate lock commitments 1,840 — — 1,840 Liabilities: Derivative liabilities: Non-hedging derivatives: Interest rate swaps - customer related (2,684 ) — (2,684 ) — Mortgage-backed securities forward sales commitments (1,836 ) — (1,836 ) — Fair value measurements at December 31, 2019 Quoted prices in active Significant markets for other Significant identical observable unobservable Carrying assets inputs inputs Value (Level 1) (Level 2) (Level 3) Assets: Securities available-for-sale: U.S. government-sponsored agencies $ 10,331 $ — $ 10,331 $ — Obligations of states and political subdivisions 45,960 — 45,960 — Mortgage-backed securities-residential 138,679 — 138,679 — Asset-backed securities 3,197 — 3,197 — Other debt securities 14,962 — 14,962 — Loans held for sale 30,740 — 30,740 — Derivative assets: Non-hedging derivatives: Interest rate swaps - customer related 926 — 926 — Mortgage loan interest rate lock commitments 648 — — 648 Liabilities: Derivative liabilities: Non-hedging derivatives: Interest rate swaps - customer related (926 ) — (926 ) — Mortgage-backed securities forward sales commitments (148 ) — (148 ) — The table below presents a reconciliation of all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2020 and 2019 (dollars in thousands): Mortgage Loan Interest Rate Lock Commitments 2020 2019 Balance of recurring Level 3 assets at January 1st $ 648 $ — Total gains or losses for the period: Included in mortgage banking income 1,192 — Balance of recurring Level 3 assets at March 31st $ 1,840 $ — The following table presents quantitative information about recurring Level 3 fair value measurements (dollars in thousands): Range Fair Valuation (Weighted- March 31, 2020 Value Technique(s) Unobservable Input(s) Average) Assets: Non-hedging derivatives: Mortgage loan interest rate lock commitments $ 1,840 Consensus pricing Origination pull-through rate 48% - 98% (76%) Range Fair Valuation (Weighted- December 31, 2019 Value Technique(s) Unobservable Input(s) Average) Assets: Non-hedging derivatives: Mortgage loan interest rate lock commitments $ 648 Consensus pricing Origination pull-through rate 68% - 95% (83%) Assets measured at fair value on a nonrecurring basis are summarized below (in thousands): There were no assets measured at fair value on a nonrecurring basis at December 31, 2019. Fair value measurements at March 31, 2020 Quoted prices in active Significant markets for other Significant identical observable unobservable Carrying assets inputs inputs Value (level 1) (level 2) (level 3) Assets: Impaired loans: Construction and land development $ 36 — — 36 Commercial and industrial $ 1,682 — — 1,682 The following table presents quantitative information about Level 3 fair value measurements for assets measured at fair value on a non-recurring basis (dollars in thousands): Fair Valuation Weighted- March 31, 2020 Value Technique(s) Unobservable Input(s) Average Impaired loans: Construction and land development $ 36 Sales comparison approach Appraisal discounts 10 % Commercial and industrial $ 1,682 Discounted cash flow method Scheduled cash collection, discount rate 7 % Fair Value of Financial Instruments The carrying value and estimated fair values of the Bank’s financial instruments at March 31, 2020 and December 31, 2019 were as follows (in thousands): March 31, 2020 December 31, 2019 Carrying Carrying Fair value amount Fair value amount Fair value level of input Financial assets: Cash and due from banks, interest-bearing deposits in financial institutions $ 91,450 $ 91,450 $ 101,094 $ 101,094 Level 1 Federal funds sold — — 175 175 Level 1 Securities available-for-sale 219,213 219,213 213,129 213,129 Level 2 Securities held-to-maturity 3,306 3,394 3,313 3,411 Level 2 Loans held for sale 186,937 188,588 168,222 169,072 Level 2 Restricted equity securities 13,573 N/A 13,689 N/A N/A Loans 1,446,835 1,459,047 1,420,102 1,414,757 Level 3 Accrued interest receivable 5,786 5,786 5,792 5,792 Level 2 Other assets 39,546 39,546 36,393 36,393 Level 2 / Level 3 Financial liabilities: Deposits 1,763,709 1,766,699 1,729,451 1,730,206 Level 3 Federal Home Loan Bank advances 10,000 10,029 10,000 10,014 Level 2 Other liabilities 2,684 2,684 1,394 1,394 Level 3 The methods and assumptions, not previously presented, used to estimate fair values are described as follows: (a) Cash and Due from Banks, Interest-Bearing Deposits in Financial Institutions For these short‑term instruments, the carrying amount is a reasonable estimate of fair value. (b) Federal Funds Sold Federal funds sold clear on a daily basis. For this reason, the carrying amount is a reasonable estimate of fair value. (c) Restricted Equity Securities It is not practical to determine the fair value of restricted securities due to restrictions placed on their transferability. (d) Loans In accordance with the prospective adoption of ASU No. 2016-01, the fair value of loans was measured using an exit price notion. Fair values for impaired loans are estimated using discounted cash flow models or based on the fair value of the underlying collateral. (e) Accrued Interest Receivable The carrying amounts of accrued interest approximate fair value. ( f ) Other Assets Included in other assets are bank owned life insurance and certain interest rate swap agreements. The fair values of interest rate swap agreements are based on independent pricing services that utilize pricing models with observable market inputs. ( g ) Deposits The fair value of demand deposits, savings accounts and certain money market deposits is the amount payable on demand at the reporting date. The fair value of certificates of deposit is estimated by discounted cash flow models, using current market interest rates offered on certificates with similar remaining maturities. ( h ) Federal Home Loan Bank Advances The fair value of fixed rate Federal Home Loan Bank Advances is estimated using discounted cash flow models, using current market interest rates offered on certificates, advances and other borrowings with similar remaining maturities. ( i ) Other Liabilities Included in other liabilities are accrued interest payable and certain interest rate swap agreements. The fair values of interest rate swap agreements are based on independent pricing services that utilize pricing models with observable market inputs. The carrying amounts of accrued interest approximate fair value. ( j ) Off-Balance Sheet Instruments Fair values for off-balance sheet, credit-related financial instruments are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. The fair value of commitments is not material. ( k ) Limitations Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instruments. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Bank’s entire holdings of a particular instrument. Because no market exists for a significant portion of the Bank’s financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on estimating on and off‑balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. For example, fixed assets are not considered financial instruments and their value has not been incorporated into the fair value estimates. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in the estimates.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements as of and for the period ended March 31, 2020 include CapStar Financial Holdings, Inc. and its wholly owned subsidiary, CapStar Bank (the “Bank”, together referred to as the “Company”). Significant intercompany transactions and accounts are eliminated in consolidation. The accompanying unaudited consolidated financial statements have been prepared in accordance with instructions to Form 10-Q and do not include all information and footnotes required by U.S. generally accepted accounting principles (“U.S. GAAP”) for complete financial statements. All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. These unaudited consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and related notes appearing in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan losses, determination of impairment of intangible assets, including goodwill, the valuation of our investment portfolio, deferred tax assets and estimated liabilities. There have been no significant changes to the Company’s critical accounting policies as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019.
Subsequent Events	Subsequent Events Accounting Standards Codification (“ASC”) 855, Subsequent Events, establishes general standards of accounting for and disclosure of events that occur after the balance sheet date but before financial statements are issued. The Company evaluated all events or transactions that occurred after March 31, 2020 through the date of the issued financial statements. On April 24, 2020, the Company adopted articles of amendment to its charter whereby the total number of shares of capital stock which the Company has authority to issue was amended to 40,000,000 shares, of which 35,000,000 shares shall be common stock ($1.00 par value per share) and 5,000,000 shares shall be preferred stock ($1.00 par value per share). Aside from the changes to its authorized shares, no further amendments were made to the Company’s charter.

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2020
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities	The amortized cost and fair value of securities available-for-sale and held-to-maturity at March 31, 2020 and December 31, 2019 are summarized as follows (in thousands): March 31, 2020 December 31, 2019 Amortized Cost Gross unrealized gains Gross unrealized (losses) Estimated fair value Amortized Cost Gross unrealized gains Gross unrealized (losses) Estimated fair value Securities available-for-sale: U. S. government agency securities $ 11,620 $ 466 $ — $ 12,086 $ 10,421 $ 4 $ (94 ) $ 10,331 State and municipal securities 43,146 1,995 (9 ) 45,132 44,053 1,927 (20 ) 45,960 Mortgage-backed securities 136,506 5,215 (172 ) 141,549 137,305 1,834 (460 ) 138,679 Asset-backed securities 3,325 — (282 ) 3,043 3,325 — (128 ) 3,197 Other debt securities 17,254 358 (209 ) 17,403 14,839 141 (18 ) 14,962 Total $ 211,851 $ 8,034 $ (672 ) $ 219,213 $ 209,943 $ 3,906 $ (720 ) $ 213,129 Securities held-to-maturity: State and municipal securities $ 3,306 $ 88 $ — $ 3,394 $ 3,313 $ 98 $ — $ 3,411 Total $ 3,306 $ 88 $ — $ 3,394 $ 3,313 $ 98 $ — $ 3,411
Summary of Securities with Unrealized Losses and Length of Time Continuous Loss Positions	Security fair values are established by an independent pricing service as of the dates indicated. The difference between amortized cost and fair value reflects current interest rates and represents the potential gain (loss) had the portfolio been liquidated on those dates. Security gains (losses) are realized only in the event of dispositions prior to maturity or other-than-temporary impairment. Securities with unrealized losses as of March 31, 2020 and December 31, 2019, and the length of time they were in continuous loss positions as of such dates are as follows (in thousands): Less than 12 months 12 months or more Total March 31, 2020 Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses U. S. government agency securities $ — $ — $ — $ — $ — $ — State and municipal securities 1,618 (3 ) 814 (6 ) 2,432 (9 ) Mortgage-backed securities 9,324 (108 ) 1,644 (64 ) 10,968 (172 ) Asset-backed securities — — 3,043 (282 ) 3,043 (282 ) Other debt securities 1,974 (26 ) 1,320 (183 ) 3,294 (209 ) Total temporarily impaired securities $ 12,916 $ (137 ) $ 6,821 $ (535 ) $ 19,737 $ (672 ) December 31, 2019 U. S. government agency securities $ 6,694 $ (51 ) $ 1,637 $ (43 ) $ 8,331 $ (94 ) State and municipal securities 2,356 (12 ) 814 (8 ) 3,170 (20 ) Mortgage-backed securities 30,570 (136 ) 21,364 (324 ) 51,934 (460 ) Asset-backed securities — — 3,197 (128 ) 3,197 (128 ) Other debt securities 3,012 (16 ) 1,502 (2 ) 4,514 (18 ) Total temporarily impaired securities $ 42,632 $ (215 ) $ 28,514 $ (505 ) $ 71,146 $ (720 )
Summary of Sale of Securities	Results from sales of securities were as follows (in thousands): Three Months Ended Three Months Ended March 31, 2020 March 31, 2019 Proceeds $ 6,043 $ 9,722 Gross gains 35 70 Gross losses (8 ) (58 )
Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity	The amortized cost and fair value of securities at March 31, 2020, by contractual maturity, are shown below (in thousands). Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. Available-for-sale Held-to-maturity Amortized cost Estimated fair value Amortized cost Estimated fair value Due in less than one year $ 11,692 $ 11,825 $ 880 $ 882 Due one to five years 29,953 30,859 2,426 2,512 Due five to ten years 29,209 30,740 — — Due beyond ten years 1,166 1,197 — — Mortgage-backed securities 136,506 141,549 — — Asset-backed securities 3,325 3,043 — — $ 211,851 $ 219,213 $ 3,306 $ 3,394

Loans and Allowance for Loan _2

Loans and Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Summary of Loan Portfolio	A summary of the loan portfolio as of March 31, 2020 and December 31, 2019 follows (in thousands): March 31, 2020 December 31, 2019 Commercial real estate $ 544,822 $ 559,899 Consumer real estate 248,243 256,097 Construction and land development 141,087 143,111 Commercial and industrial 447,311 394,408 Consumer 27,739 28,426 Other 37,633 38,161 Total 1,446,835 1,420,102 Allowance for loan losses (20,114 ) (12,604 ) $ 1,426,721 $ 1,407,498
Summary of Loan Balance by Category as well as Risk Rating	The following tables present the loan balances by category as well as risk rating (in thousands): Non-impaired Loans March 31, 2020 Pass Special Mention Substandard Total Non-impaired Total Loans Total Commercial real estate $ 539,282 $ 909 $ 3,264 $ 543,455 $ 1,367 $ 544,822 Consumer real estate 245,617 497 1,133 247,247 996 248,243 Construction and land development 140,954 — 21 140,975 112 141,087 Commercial and industrial 419,247 18,380 6,332 443,959 3,352 447,311 Consumer 27,702 5 13 27,720 19 27,739 Other 37,633 — — 37,633 — 37,633 Total $ 1,410,435 $ 19,791 $ 10,763 $ 1,440,989 $ 5,846 $ 1,446,835 December 31, 2019 Commercial real estate $ 551,929 $ 915 $ 4,438 $ 557,282 $ 2,617 $ 559,899 Consumer real estate 252,952 503 1,551 255,006 1,091 256,097 Construction and land development 142,978 — 16 142,994 117 143,111 Commercial and industrial 370,475 14,341 8,241 393,057 1,351 394,408 Consumer 28,382 6 15 28,403 23 28,426 Other 38,161 — — 38,161 — 38,161 Total $ 1,384,877 $ 15,765 $ 14,261 $ 1,414,903 $ 5,199 $ 1,420,102
Summary of Changes and Breakdown of Allowance for Loan Losses and Loan Portfolio by Loan Category	The following table details the changes in the ALL for the three months ended March 31, 2020 and 2019 (in thousands): Commercial real estate Consumer real estate Construction and land development Commercial and industrial Consumer Other Total Three Months Ended March 31, 2020 Balance, beginning of year $ 3,599 $ 1,231 $ 2,058 $ 5,074 $ 222 $ 420 $ 12,604 Charged-off loans (3 ) — — (88 ) (27 ) (54 ) (172 ) Recoveries — 2 — 102 19 6 129 Provision for loan losses 587 180 412 6,311 20 43 7,553 Balance, end of period $ 4,183 $ 1,413 $ 2,470 $ 11,399 $ 234 $ 415 $ 20,114 Three Months Ended March 31, 2019 Balance, beginning of year $ 3,309 $ 1,005 $ 2,431 $ 5,036 $ 105 $ 227 $ 12,113 Charged-off loans — — — — (37 ) (45 ) (82 ) Recoveries 6 3 — 2 18 13 42 Provision for loan losses 199 9 (65 ) 486 53 204 886 Balance, end of period $ 3,514 $ 1,017 $ 2,366 $ 5,524 $ 139 $ 399 $ 12,959 A breakdown of the ALL and the loan portfolio by loan category at March 31, 2020 and December 31, 2019 follows (in thousands): Commercial real estate Consumer real estate Construction and land development Commercial and industrial Consumer Other Total March 31, 2020 Allowance for Loan Losses: Collectively evaluated for impairment $ 4,183 $ 1,413 $ 2,397 $ 10,755 $ 234 $ 415 $ 19,397 Individually evaluated for impairment — — 73 644 — — 717 Acquired with deteriorated credit quality — — — — — — — Balances, end of period $ 4,183 $ 1,413 $ 2,470 $ 11,399 $ 234 $ 415 $ 20,114 Loans: Collectively evaluated for impairment $ 543,455 $ 247,247 $ 140,975 $ 443,959 $ 27,720 $ 37,633 $ 1,440,989 Individually evaluated for impairment 1,258 436 109 2,468 4 — 4,275 Acquired with deteriorated credit quality 109 560 3 884 15 — 1,571 Balances, end of period $ 544,822 $ 248,243 $ 141,087 $ 447,311 $ 27,739 $ 37,633 $ 1,446,835 December 31, 2019 Allowance for Loan Losses: Collectively evaluated for impairment $ 3,599 $ 1,231 $ 2,058 $ 5,074 $ 222 $ 420 $ 12,604 Individually evaluated for impairment — — — — — — — Acquired with deteriorated credit quality — — — — — — — Balances, end of period $ 3,599 $ 1,231 $ 2,058 $ 5,074 $ 222 $ 420 $ 12,604 Loans: Collectively evaluated for impairment $ 557,282 $ 255,006 $ 142,994 $ 393,057 $ 28,403 $ 38,161 $ 1,414,903 Individually evaluated for impairment 2,507 483 112 487 5 — 3,594 Acquired with deteriorated credit quality 110 608 5 864 18 — 1,605 Balances, end of period $ 559,899 $ 256,097 $ 143,111 $ 394,408 $ 28,426 $ 38,161 $ 1,420,102
Allocation of ALL with Corresponding Percentage of ALL in Each Category to Total Loans, Net of Deferred Fee	The following table presents the allocation of the ALL for each respective loan category with the corresponding percentage of the ALL in each category to total loans, net of deferred fees as of March 31, 2020 and December 31, 2019 (dollars in thousands): March 31, 2020 December 31, 2019 Amount Percent of total loans Amount Percent of total loans Commercial real estate $ 4,183 0.29 % $ 3,599 0.25 % Consumer real estate 1,413 0.10 % 1,231 0.09 % Construction and land development 2,470 0.17 % 2,058 0.14 % Commercial and industrial 11,399 0.79 % 5,074 0.36 % Consumer 234 0.01 % 222 0.02 % Other 415 0.03 % 420 0.03 % Total allowance for loan losses $ 20,114 1.39 % $ 12,604 0.89 %
Summary of Impaired Loans	The following table presents the Company’s impaired loans that were evaluated for specific loss allowance as of March 31, 2020 and December 31, 2019 (in thousands): March 31, 2020 December 31, 2019 Recorded investment Unpaid principal balance Related allowance Recorded investment Unpaid principal balance Related allowance With no related allowance recorded: Commercial real estate $ 1,367 $ 1,430 $ — $ 2,617 $ 2,621 $ — Consumer real estate 996 1,226 — 1,091 1,327 — Construction and land development 3 13 — 117 132 — Commercial and industrial 1,028 1,862 — 1,351 2,173 — Consumer 19 37 — 23 41 — Other — — — — — — Subtotal 3,413 4,568 — 5,199 6,294 — With an allowance recorded: Commercial real estate — — — — — — Consumer real estate — — — — — — Construction and land development 109 114 73 — — — Commercial and industrial 2,324 2,326 644 — — — Consumer — — — — — — Other — — — — — — Subtotal 2,433 2,440 717 — — — Total $ 5,846 $ 7,008 $ 717 $ 5,199 $ 6,294 $ — The following presents information related to the average recorded investment and interest income recognized on impaired loans for the three months ended March 31, 2020 and 2019 (in thousands): Three Months Ended Three Months Ended March 31, 2020 March 31, 2019 Average recorded investment Interest income recognized Average recorded investment Interest income recognized With no related allowance recorded: Commercial real estate $ 2,044 $ 31 $ 1,381 $ 16 Consumer real estate 1,004 10 938 — Construction and land development 3 — 8 — Commercial and industrial 1,191 52 724 — Consumer 20 1 39 — Other — — — — Subtotal 4,262 94 3,090 16 With an allowance recorded: Commercial real estate — — — — Consumer real estate — — — — Construction and land development 110 — — — Commercial and industrial 3,349 32 777 — Consumer — — — — Other — — — — Subtotal 3,459 32 777 — Total $ 7,721 $ 126 $ 3,867 $ 16
Schedule of Aging of Recorded Investment in Past-due Loans, by Class of Loans	The following table presents the aging of the recorded investment in past due loans as of March 31, 2020 and December 31, 2019 by class of loans (in thousands): 30 - 59 60 - 89 Greater Than Days Days 89 Days Total Loans Not March 31, 2020 Past Due Past Due Past Due Past Due Past Due Total Commercial real estate $ 214 $ 441 $ 58 $ 713 $ 544,109 $ 544,822 Consumer real estate 3,253 124 762 4,139 244,104 248,243 Construction and land development 1,051 — — 1,051 140,036 141,087 Commercial and industrial 2,499 — 410 2,909 444,402 447,311 Consumer 45 21 6 72 27,667 27,739 Other 20 — — 20 37,613 37,633 Total $ 7,082 $ 586 $ 1,236 $ 8,904 $ 1,437,931 $ 1,446,835 December 31, 2019 Commercial real estate $ 372 $ — $ — $ 372 $ 559,527 $ 559,899 Consumer real estate 3,642 474 643 4,759 251,338 256,097 Construction and land development 653 15 — 668 142,443 143,111 Commercial and industrial 1,277 8 440 1,725 392,683 394,408 Consumer 67 — 33 100 28,326 28,426 Other — — — — 38,161 38,161 Total $ 6,011 $ 497 $ 1,116 $ 7,624 $ 1,412,478 $ 1,420,102
Schedule of Non-Accrual Loans, Past Due Loans over 89 Days and Accruing and Troubled Debt Restructurings (TDR) by Class of Loans	The following table presents the recorded investment in non-accrual loans, past due loans over 89 days and accruing and troubled debt restructurings (“TDR”) by class of loans as of March 31, 2020 and December 31, 2019 (in thousands): Past Due Over 89 Troubled Debt Non-Accrual Days and Accruing Restructurings March 31, 2020 Commercial real estate $ — $ 58 $ 1,256 Consumer real estate 844 291 — Construction and land development 112 — — Commercial and industrial 2,691 50 50 Consumer 11 — — Other — — — Total $ 3,658 $ 399 $ 1,306 December 31, 2019 Commercial real estate $ — $ — $ 2,446 Consumer real estate 894 12 — Construction and land development 117 — — Commercial and industrial 440 — 271 Consumer 13 26 — Other — — — Total $ 1,464 $ 38 $ 2,717
Schedule of Activity in Purchased Credit Impaired Loans	The following table presents changes in the carrying value of purchased credit impaired (“PCI”) loans (in thousands): Three Months Ended March 31, 2020 Balance at beginning of period $ 1,605 Change due to payments received and accretion (34 ) Change due to loan charge-offs — Other — Balance at end of period $ 1,571 The following table presents changes in the accretable yield for PCI loans (in thousands): Three Months Ended March 31, 2020 Balance at beginning of period $ 915 Accretion (34 ) Reclassification from (to) nonaccretable difference — Other, net (4 ) Balance at end of period $ 877

Premises and Equipment (Tables)

Premises and Equipment (Tables)	3 Months Ended
	Mar. 31, 2020
Property Plant And Equipment [Abstract]
Summary of Lease Costs	Lease costs were as follows (in thousands): Three Months Ended March 31, 2020 2019 Operating lease cost $ 478 $ 482 Short-term lease cost — — Variable lease cost — — Total lease cost $ 478 $ 482
Maturity Analysis of Operating Lease Liabilities and Reconciliation of Undiscounted Cash Flows	A maturity analysis of operating lease liabilities and reconciliation of the undiscounted cash flows to the total operating lease liability is as follows (in thousands): March 31, 2020 Lease payments due: 2020 $ 1,174 2021 1,590 2022 1,476 2023 1,425 2024 1,130 2025 and thereafter 7,710 Total undiscounted cash flows 14,505 Discount on cash flows (2,333 ) Total lease liability $ 12,172

Federal Home Loan Bank Advanc_2

Federal Home Loan Bank Advances (Tables)	3 Months Ended
	Mar. 31, 2020
Federal Home Loan Banks [Abstract]
Summary of Contractual Maturities and Average Effective Rates of Outstanding Advances	The following is a summary of the contractual maturities and average effective rates of outstanding advances (dollars in thousands): March 31, 2020 December 31, 2019 Year Amount Interest Rates Amount Interest Rates 2020 $ 10,000 1.37 % $ 10,000 2.05 % 2021 — — — — 2022 — — — — 2023 — — — — 2024 — — — — Thereafter — — — — Total $ 10,000 1.37 % $ 10,000 2.05 %

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2020
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component, Net of Tax	The following were changes in accumulated other comprehensive income (loss) by component, net of tax, for the periods ended March 31, 2020 and 2019 (in thousands): Unrealized Gains Gains and and Losses Losses on on Available Cash Flow for Sale Three Months Ended March 31, 2020 Hedges Securities Total Beginning Balance $ (2,679 ) $ 4,062 $ 1,383 Other comprehensive income before reclassification — 3,175 3,175 Amounts reclassified from accumulated other comprehensive income 253 (20 ) 233 Net current period other comprehensive income 253 3,155 3,408 Ending Balance $ (2,426 ) $ 7,217 $ 4,791 Three Months Ended March 31, 2019 Beginning Balance $ (2,636 ) $ (680 ) $ (3,316 ) Other comprehensive income before reclassification (178 ) 2,411 2,233 Amounts reclassified from accumulated other comprehensive income 188 (9 ) 179 Net current period other comprehensive income 10 2,402 2,412 Ending Balance $ (2,626 ) $ 1,722 $ (904 )
Summary of Significant Amounts Reclassified out off Accumulated Other Comprehensive Income (Loss)	The following were significant amounts reclassified out of each component of accumulated other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 (in thousands): Three Months Three Months Affected Line Item Details about Accumulated Other Ended Ended in the Statement Where Comprehensive Income Components March 31, 2020 March 31, 2019 Net Income is Presented Realized losses on cash flow hedges $ (201 ) $ (110 ) Interest expense - money market (52 ) (87 ) Interest expense - Federal Home Loan Bank advances — 9 Income tax benefit $ (253 ) $ (188 ) Net of tax Realized gains on available-for-sale securities $ 27 $ 12 Net gain on sale of securities (7 ) (3 ) Income tax expense $ 20 $ 9 Net of tax

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Schedule of Financial Instruments Representing Credit Risk	The following table sets forth outstanding financial instruments whose contract amounts represent credit risk as of March 31, 2020 and December 31, 2019 (in thousands): Contract or notional amount March 31, 2020 December 31, 2019 Financial instruments whose contract amounts represent credit risk: Unused commitments to extend credit $ 657,182 $ 672,933 Standby letters of credit 9,893 9,634 Total $ 667,075 $ 682,567

Derivatives (Tables)

Derivatives (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Customer Related Interest Rate Swaps	A summary of the Company’s customer related interest rate swaps was as follows (in thousands): March 31, 2020 December 31, 2019 Notional Estimated Notional Estimated amount fair value amount fair value Interest rate swap agreements: Pay fixed/receive variable swaps $ 44,670 $ (2,684 ) $ 45,053 $ (926 ) Pay variable/receive fixed swaps 44,670 2,684 45,053 926 Total $ 89,340 $ — $ 90,106 $ —
Summary of Net Gains (Losses) Relating to Mortgage Banking Derivative Instruments Included in Mortgage Banking Income	The net gains (losses) relating to mortgage banking derivative instruments included in mortgage banking income were as follows (dollars in thousands): Three Months Ended March 31, 2020 Mortgage loan interest rate lock commitments $ 1,192 Mortgage-backed securities forward sales commitments (1,687 ) Total $ (495 )
Summary of Amount and Fair Value of Mortgage Banking Derivative Instruments Included in Consolidated Balance Sheets	The amount and fair value of mortgage banking derivatives included in the consolidated balance sheets was as follows (dollars in thousands): March 31, 2020 December 31, 2019 Notional Estimated Notional Estimated amount fair value amount fair value Included in other assets: Mortgage loan interest rate lock commitments $ 118,310 $ 1,840 $ 44,694 $ 648 Included in other liabilities: Mortgage-backed securities forward sales commitments $ 85,500 $ 1,836 $ 38,500 $ 148

Stock Options and Restricted _2

Stock Options and Restricted Shares (Tables)	3 Months Ended
	Mar. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Company Recognized Stock-Based Compensation Expense	The Company has recognized stock-based compensation expense, within salaries and employee benefits for employees, and within other non-interest expense for directors, in the consolidated statements of income as follows (in thousands): Three Months Ended March 31, 2020 2019 Stock-based compensation expense before income taxes $ 360 $ 344 Less: deferred tax benefit (94 ) (90 ) Reduction of net income $ 266 $ 254
Summary of Changes in Company's Nonvested Restricted Shares	A summary of the changes in the Company’s nonvested restricted shares for the three months ended March 31, 2020 follows: Weighted Average Restricted Grant Date Nonvested Shares Shares Fair Value Nonvested at beginning of period 84,697 $ 17.44 Granted 83,493 14.42 Vested (41,886 ) 16.61 Forfeited (2,657 ) 15.66 Nonvested at end of period 123,647 $ 15.72
Summary of Fair Value of Options Granted Using Weighted Average Assumptions	The fair value of options granted during 2019 was determined using the following weighted average assumptions as of the grant date. 2019 Dividend yield 1.35 % Expected term (in years) 6.50 Expected stock price volatility 29.55 % Risk-free interest rate 2.25 %
Summary of Activity in Stock Options	A summary of the activity in stock options for the three months ended March 31, 2020 follows: Weighted Weighted Average Average Remaining Exercise Contractual Shares Price Term (years) Outstanding at beginning of period 271,202 $ 11.22 Granted — — Exercised (24,613 ) 6.75 Forfeited or expired (20,000 ) 10.92 Outstanding at end of period 226,589 $ 11.73 5.4 Fully vested and expected to vest 226,589 $ 11.73 5.4 Exercisable at end of period 176,589 $ 10.85 4.4
Information Related to Stock Options	Information related to stock options during each year follows: 2020 2019 Intrinsic value of options exercised $ 188,662 $ 1,733,087 Cash received from option exercises 105,847 1,179,923 Tax benefit realized from option exercises 16,524 15,411 Weighted average fair value of options granted — —

Regulatory Capital Requiremen_2

Regulatory Capital Requirements (Tables)	3 Months Ended
	Mar. 31, 2020
Banking And Thrift [Abstract]
Schedule of Capital Amounts and Ratios	The Company’s and the Bank’s capital amounts and ratios as of March 31, 2020 and December 31, 2019 are presented in the following table (dollars in thousands). Actual Minimum capital requirement (1) Minimum to be well-capitalized (2) Amount Ratio Amount Ratio Amount Ratio At March 31, 2020: Total capital to risk-weighted assets: CapStar Financial Holdings, Inc. $ 245,991 13.68 % $ 143,806 8.00 % N/A N/A CapStar Bank 234,048 13.02 143,757 8.00 $ 179,696 10.00 Tier I capital to risk-weighted assets: CapStar Financial Holdings, Inc. 225,698 12.56 107,854 6.00 N/A N/A CapStar Bank 213,755 11.90 107,818 6.00 143,757 8.00 Common equity Tier 1 capital to risk weighted assets: CapStar Financial Holdings, Inc. 225,698 12.56 80,891 4.50 N/A N/A CapStar Bank 197,255 10.98 80,863 4.50 116,802 6.50 Tier I capital to average assets: CapStar Financial Holdings, Inc. 225,698 11.23 80,379 4.00 N/A N/A CapStar Bank 213,755 10.64 80,346 4.00 100,432 5.00 At December 31, 2019: Total capital to risk-weighted assets: CapStar Financial Holdings, Inc. $ 237,857 13.45 % $ 141,436 8.00 % N/A N/A CapStar Bank 224,443 12.70 141,388 8.00 $ 176,735 10.00 Tier I capital to risk-weighted assets: CapStar Financial Holdings, Inc. 225,074 12.73 106,077 6.00 N/A N/A CapStar Bank 211,660 11.98 106,041 6.00 141,388 8.00 Common equity Tier 1 capital to risk weighted assets: CapStar Financial Holdings, Inc. 225,074 12.73 79,558 4.50 N/A N/A CapStar Bank 195,160 11.04 79,531 4.50 114,878 6.50 Tier I capital to average assets: CapStar Financial Holdings, Inc. 225,074 11.37 79,201 4.00 N/A N/A CapStar Bank 211,660 10.70 79,150 4.00 98,938 5.00 (1) For the calendar year 2020, the Company must maintain a capital conservation buffer of Tier 1 common equity capital in excess of minimum risk-based capital ratios by at least 2.5% to avoid limits on capital distributions and certain discretionary bonus payments to executive officers and similar employees. (2) For the Company to be well-capitalized, the Bank must be well-capitalized and the Company must not be subject to any written agreement, order, capital directive, or prompt corrective action directive issued by the Federal Reserve to meet and maintain a specific capital level for any capital measure.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Summary of Basic and Diluted Earnings Per Share	The following is a summary of the basic and diluted earnings per share calculation for the three months ended March 31, 2020 and 2019 (in thousands except share data): Three Months Ended March 31, 2020 2019 Basic net income per share calculation: Numerator – Net income $ 1,346 $ 4,780 Denominator – Average common shares outstanding 18,392,913 17,783,239 Basic net income per share $ 0.07 $ 0.27 Diluted net income per share calculation: Numerator – Net income $ 1,346 $ 4,780 Denominator – Average common shares outstanding 18,392,913 17,783,239 Dilutive shares contingently issuable 50,812 1,047,694 Average diluted common shares outstanding 18,443,725 18,830,933 Diluted net income per share $ 0.07 $ 0.25

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis	Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands): Fair value measurements at March 31, 2020 Quoted prices in active Significant markets for other Significant identical observable unobservable Carrying assets inputs inputs Value (Level 1) (Level 2) (Level 3) Assets: Securities available-for-sale: U.S. government-sponsored agencies $ 12,086 $ — $ 12,086 $ — Obligations of states and political subdivisions 45,132 — 45,132 — Mortgage-backed securities-residential 141,549 — 141,549 — Asset-backed securities 3,043 — 3,043 — Other debt securities 17,403 — 17,403 — Loans held for sale 54,896 — 54,896 — Derivative assets: Non-hedging derivatives: Interest rate swaps - customer related 2,684 — 2,684 — Mortgage loan interest rate lock commitments 1,840 — — 1,840 Liabilities: Derivative liabilities: Non-hedging derivatives: Interest rate swaps - customer related (2,684 ) — (2,684 ) — Mortgage-backed securities forward sales commitments (1,836 ) — (1,836 ) — Fair value measurements at December 31, 2019 Quoted prices in active Significant markets for other Significant identical observable unobservable Carrying assets inputs inputs Value (Level 1) (Level 2) (Level 3) Assets: Securities available-for-sale: U.S. government-sponsored agencies $ 10,331 $ — $ 10,331 $ — Obligations of states and political subdivisions 45,960 — 45,960 — Mortgage-backed securities-residential 138,679 — 138,679 — Asset-backed securities 3,197 — 3,197 — Other debt securities 14,962 — 14,962 — Loans held for sale 30,740 — 30,740 — Derivative assets: Non-hedging derivatives: Interest rate swaps - customer related 926 — 926 — Mortgage loan interest rate lock commitments 648 — — 648 Liabilities: Derivative liabilities: Non-hedging derivatives: Interest rate swaps - customer related (926 ) — (926 ) — Mortgage-backed securities forward sales commitments (148 ) — (148 ) —
Reconciliation of Assets Measured at Fair Value on Recurring Basis using Significant Unobservable Inputs (Level 3)	The table below presents a reconciliation of all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2020 and 2019 (dollars in thousands): Mortgage Loan Interest Rate Lock Commitments 2020 2019 Balance of recurring Level 3 assets at January 1st $ 648 $ — Total gains or losses for the period: Included in mortgage banking income 1,192 — Balance of recurring Level 3 assets at March 31st $ 1,840 $ —
Summary of Quantitative Information About Level 3 Fair Value Measurements for Assets Measured at Fair Value on Recurring and Non-recurring Basis	The following table presents quantitative information about recurring Level 3 fair value measurements (dollars in thousands): Range Fair Valuation (Weighted- March 31, 2020 Value Technique(s) Unobservable Input(s) Average) Assets: Non-hedging derivatives: Mortgage loan interest rate lock commitments $ 1,840 Consensus pricing Origination pull-through rate 48% - 98% (76%) Range Fair Valuation (Weighted- December 31, 2019 Value Technique(s) Unobservable Input(s) Average) Assets: Non-hedging derivatives: Mortgage loan interest rate lock commitments $ 648 Consensus pricing Origination pull-through rate 68% - 95% (83%) The following table presents quantitative information about Level 3 fair value measurements for assets measured at fair value on a non-recurring basis (dollars in thousands): Fair Valuation Weighted- March 31, 2020 Value Technique(s) Unobservable Input(s) Average Impaired loans: Construction and land development $ 36 Sales comparison approach Appraisal discounts 10 % Commercial and industrial $ 1,682 Discounted cash flow method Scheduled cash collection, discount rate 7 %
Summary of Assets Measured at Fair Value on a Nonrecurring Basis	Assets measured at fair value on a nonrecurring basis are summarized below (in thousands): There were no assets measured at fair value on a nonrecurring basis at December 31, 2019. Fair value measurements at March 31, 2020 Quoted prices in active Significant markets for other Significant identical observable unobservable Carrying assets inputs inputs Value (level 1) (level 2) (level 3) Assets: Impaired loans: Construction and land development $ 36 — — 36 Commercial and industrial $ 1,682 — — 1,682
Summary of Carrying Value and Fair Values of the Bank's Financial Instruments	The carrying value and estimated fair values of the Bank’s financial instruments at March 31, 2020 and December 31, 2019 were as follows (in thousands): March 31, 2020 December 31, 2019 Carrying Carrying Fair value amount Fair value amount Fair value level of input Financial assets: Cash and due from banks, interest-bearing deposits in financial institutions $ 91,450 $ 91,450 $ 101,094 $ 101,094 Level 1 Federal funds sold — — 175 175 Level 1 Securities available-for-sale 219,213 219,213 213,129 213,129 Level 2 Securities held-to-maturity 3,306 3,394 3,313 3,411 Level 2 Loans held for sale 186,937 188,588 168,222 169,072 Level 2 Restricted equity securities 13,573 N/A 13,689 N/A N/A Loans 1,446,835 1,459,047 1,420,102 1,414,757 Level 3 Accrued interest receivable 5,786 5,786 5,792 5,792 Level 2 Other assets 39,546 39,546 36,393 36,393 Level 2 / Level 3 Financial liabilities: Deposits 1,763,709 1,766,699 1,729,451 1,730,206 Level 3 Federal Home Loan Bank advances 10,000 10,029 10,000 10,014 Level 2 Other liabilities 2,684 2,684 1,394 1,394 Level 3

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Details) - Subsequent Events	Apr. 24, 2020$ / sharesshares
Summary Of Significant Accounting Policies [Line Items]
Common and preferred stock shares authorized	40,000,000
Common stock, shares authorized	35,000,000
Common stock, par value | $ / shares	$ 1
Preferred stock, shares authorized	5,000,000
Preferred stock, par value | $ / shares	$ 1

Securities - Summary of Amortiz

Securities - Summary of Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Securities available for sale [Abstract]
Amortized Cost	$ 211,851	$ 209,943
Gross unrealized gains	8,034	3,906
Gross unrealized (losses)	(672)	(720)
Estimated fair value	219,213	213,129
Securities held to maturity [Abstract]
Amortized Cost	3,306	3,313
Gross unrealized gains	88	98
Estimated fair value	3,394	3,411
U. S. government agency securities
Securities available for sale [Abstract]
Amortized Cost	11,620	10,421
Gross unrealized gains	466	4
Gross unrealized (losses)		(94)
Estimated fair value	12,086	10,331
State and municipal securities
Securities available for sale [Abstract]
Amortized Cost	43,146	44,053
Gross unrealized gains	1,995	1,927
Gross unrealized (losses)	(9)	(20)
Estimated fair value	45,132	45,960
Securities held to maturity [Abstract]
Amortized Cost	3,306	3,313
Gross unrealized gains	88	98
Estimated fair value	3,394	3,411
Mortgage-backed securities
Securities available for sale [Abstract]
Amortized Cost	136,506	137,305
Gross unrealized gains	5,215	1,834
Gross unrealized (losses)	(172)	(460)
Estimated fair value	141,549	138,679
Asset-backed securities
Securities available for sale [Abstract]
Amortized Cost	3,325	3,325
Gross unrealized (losses)	(282)	(128)
Estimated fair value	3,043	3,197
Other debt securities
Securities available for sale [Abstract]
Amortized Cost	17,254	14,839
Gross unrealized gains	358	141
Gross unrealized (losses)	(209)	(18)
Estimated fair value	$ 17,403	$ 14,962

Securities - Summary of Securit

Securities - Summary of Securities with Unrealized Losses and Length of Time Continuous Loss Positions (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	$ 12,916	$ 42,632
Less than 12 months, Gross unrealized (losses)	(137)	(215)
12 months or more, Estimated fair value	6,821	28,514
12 months or more, Gross unrealized losses	(535)	(505)
Total, Estimated fair value	19,737	71,146
Total, Gross unrealized losses	(672)	(720)
U. S. government agency securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value		6,694
Less than 12 months, Gross unrealized (losses)		(51)
12 months or more, Estimated fair value		1,637
12 months or more, Gross unrealized losses		(43)
Total, Estimated fair value		8,331
Total, Gross unrealized losses		(94)
State and municipal securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	1,618	2,356
Less than 12 months, Gross unrealized (losses)	(3)	(12)
12 months or more, Estimated fair value	814	814
12 months or more, Gross unrealized losses	(6)	(8)
Total, Estimated fair value	2,432	3,170
Total, Gross unrealized losses	(9)	(20)
Mortgage-backed securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	9,324	30,570
Less than 12 months, Gross unrealized (losses)	(108)	(136)
12 months or more, Estimated fair value	1,644	21,364
12 months or more, Gross unrealized losses	(64)	(324)
Total, Estimated fair value	10,968	51,934
Total, Gross unrealized losses	(172)	(460)
Asset-backed securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
12 months or more, Estimated fair value	3,043	3,197
12 months or more, Gross unrealized losses	(282)	(128)
Total, Estimated fair value	3,043	3,197
Total, Gross unrealized losses	(282)	(128)
Other debt securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	1,974	3,012
Less than 12 months, Gross unrealized (losses)	(26)	(16)
12 months or more, Estimated fair value	1,320	1,502
12 months or more, Gross unrealized losses	(183)	(2)
Total, Estimated fair value	3,294	4,514
Total, Gross unrealized losses	$ (209)	$ (18)

Securities - Additional Informa

Securities - Additional Information (Details) $ in Millions	Mar. 31, 2020USD ($)
Schedule Of Available For Sale Securities [Line Items]
Gross unrealized losses in investment securities portfolio	$ 0.7
Public Deposits, Derivative Positions and Federal Home Loan Bank Advances
Schedule Of Available For Sale Securities [Line Items]
Carrying value of securities	$ 69.3

Securities - Summary of Sale of

Securities - Summary of Sale of Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Investments Debt And Equity Securities [Abstract]
Proceeds	$ 6,043	$ 9,722
Gross gains	35	70
Gross losses	$ (8)	$ (58)

Securities - Summary of Amort_2

Securities - Summary of Amortized Cost and Fair Value of Debt and Equity Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Available-for-sale, Amortized cost [Abstract]
Due in less than one year	$ 11,692
Due one to five years	29,953
Due five to ten years	29,209
Due beyond ten years	1,166
Amortized Cost	211,851	$ 209,943
Available-for-sale, Estimated fair value [Abstract]
Due in less than one year	11,825
Due one to five years	30,859
Due five to ten years	30,740
Due beyond ten years	1,197
Estimated fair value	219,213	213,129
Held-to-maturity, Amortized cost [Abstract]
Due in less than one year	880
Due one to five years	2,426
Amortized Cost	3,306	3,313
Securities held to maturity [Abstract]
Due in less than one year	882
Due one to five years	2,512
Estimated fair value	3,394	3,411
Mortgage-backed securities
Available-for-sale, Amortized cost [Abstract]
Amortized cost	136,506
Amortized Cost	136,506	137,305
Available-for-sale, Estimated fair value [Abstract]
Estimated fair value	141,549
Estimated fair value	141,549	138,679
Asset-backed securities
Available-for-sale, Amortized cost [Abstract]
Amortized cost	3,325
Amortized Cost	3,325	3,325
Available-for-sale, Estimated fair value [Abstract]
Estimated fair value	3,043
Estimated fair value	$ 3,043	$ 3,197

Loans and Allowance for Loan _3

Loans and Allowance for Loan Losses - Summary of Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Loans And Leases Receivable Disclosure [Line Items]
Total loans	$ 1,446,835	$ 1,420,102
Allowance for loan losses	(20,114)	(12,604)	$ (12,959)	$ (12,113)
Loans, net	1,426,721	1,407,498
Commercial real estate
Loans And Leases Receivable Disclosure [Line Items]
Total loans	544,822	559,899
Allowance for loan losses	(4,183)	(3,599)	(3,514)	(3,309)
Consumer real estate
Loans And Leases Receivable Disclosure [Line Items]
Total loans	248,243	256,097
Allowance for loan losses	(1,413)	(1,231)	(1,017)	(1,005)
Construction and land development
Loans And Leases Receivable Disclosure [Line Items]
Total loans	141,087	143,111
Allowance for loan losses	(2,470)	(2,058)	(2,366)	(2,431)
Commercial and industrial
Loans And Leases Receivable Disclosure [Line Items]
Total loans	447,311	394,408
Allowance for loan losses	(11,399)	(5,074)	(5,524)	(5,036)
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Total loans	27,739	28,426
Allowance for loan losses	(234)	(222)	(139)	(105)
Other
Loans And Leases Receivable Disclosure [Line Items]
Total loans	37,633	38,161
Allowance for loan losses	$ (415)	$ (420)	$ (399)	$ (227)

Loans and Allowance for Loan _4

Loans and Allowance for Loan Losses - Additional Information (Details)	3 Months Ended
	Mar. 31, 2020USD ($)Contract	Mar. 31, 2019USD ($)Contract	Dec. 31, 2019USD ($)
Loans And Leases Receivable Disclosure [Line Items]
Minimum loan amount for loans analyzed by credit risk	$ 500,000
Total loans	1,446,835,000		$ 1,420,102,000
Interest income recognized on a cash basis for impaired loans	0	$ 0
Investment in TDR	1,300,000		2,700,000
Specific allowance related to loans	717,000
Additional commitments related to TDR	$ 0		0
New TDR identified during the period | Contract	0	0
TDR, payment default within twelve months | Contract	0	0
Loan period considered as payment default	30 days
Troubled Debt Restructurings
Loans And Leases Receivable Disclosure [Line Items]
Specific allowance related to loans	$ 0		0
Doubtful
Loans And Leases Receivable Disclosure [Line Items]
Total loans	$ 0		$ 0

Loans and Allowance for Loan _5

Loans and Allowance for Loan Losses - Summary of Loan Balances by Category as well as Risk Rating (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 1,446,835	$ 1,420,102
Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	5,846	5,199
Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Total loans	1,440,989	1,414,903
Performing Financial Instruments | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	1,410,435	1,384,877
Performing Financial Instruments | Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans	19,791	15,765
Performing Financial Instruments | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	10,763	14,261
Commercial real estate
Financing Receivable Recorded Investment [Line Items]
Total loans	544,822	559,899
Commercial real estate | Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	1,367	2,617
Commercial real estate | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Total loans	543,455	557,282
Commercial real estate | Performing Financial Instruments | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	539,282	551,929
Commercial real estate | Performing Financial Instruments | Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans	909	915
Commercial real estate | Performing Financial Instruments | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	3,264	4,438
Consumer real estate
Financing Receivable Recorded Investment [Line Items]
Total loans	248,243	256,097
Consumer real estate | Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	996	1,091
Consumer real estate | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Total loans	247,247	255,006
Consumer real estate | Performing Financial Instruments | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	245,617	252,952
Consumer real estate | Performing Financial Instruments | Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans	497	503
Consumer real estate | Performing Financial Instruments | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	1,133	1,551
Construction and land development
Financing Receivable Recorded Investment [Line Items]
Total loans	141,087	143,111
Construction and land development | Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	112	117
Construction and land development | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Total loans	140,975	142,994
Construction and land development | Performing Financial Instruments | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	140,954	142,978
Construction and land development | Performing Financial Instruments | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	21	16
Commercial and industrial
Financing Receivable Recorded Investment [Line Items]
Total loans	447,311	394,408
Commercial and industrial | Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	3,352	1,351
Commercial and industrial | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Total loans	443,959	393,057
Commercial and industrial | Performing Financial Instruments | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	419,247	370,475
Commercial and industrial | Performing Financial Instruments | Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans	18,380	14,341
Commercial and industrial | Performing Financial Instruments | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	6,332	8,241
Consumer
Financing Receivable Recorded Investment [Line Items]
Total loans	27,739	28,426
Consumer | Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	19	23
Consumer | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Total loans	27,720	28,403
Consumer | Performing Financial Instruments | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	27,702	28,382
Consumer | Performing Financial Instruments | Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans	5	6
Consumer | Performing Financial Instruments | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	13	15
Other
Financing Receivable Recorded Investment [Line Items]
Total loans	37,633	38,161
Other | Performing Financial Instruments
Financing Receivable Recorded Investment [Line Items]
Total loans	37,633	38,161
Other | Performing Financial Instruments | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 37,633	$ 38,161

Loans and Allowance for Loan _6

Loans and Allowance for Loan Losses - Summary of Changes in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	$ 12,604	$ 12,113
Charged-off loans	(172)	(82)
Recoveries	129	42
Provision for loan losses	7,553	886
Ending Balance	20,114	12,959
Commercial real estate
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	3,599	3,309
Charged-off loans	(3)
Recoveries		6
Provision for loan losses	587	199
Ending Balance	4,183	3,514
Consumer real estate
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	1,231	1,005
Recoveries	2	3
Provision for loan losses	180	9
Ending Balance	1,413	1,017
Construction and land development
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	2,058	2,431
Provision for loan losses	412	(65)
Ending Balance	2,470	2,366
Commercial and industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	5,074	5,036
Charged-off loans	(88)
Recoveries	102	2
Provision for loan losses	6,311	486
Ending Balance	11,399	5,524
Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	222	105
Charged-off loans	(27)	(37)
Recoveries	19	18
Provision for loan losses	20	53
Ending Balance	234	139
Other
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	420	227
Charged-off loans	(54)	(45)
Recoveries	6	13
Provision for loan losses	43	204
Ending Balance	$ 415	$ 399

Loans and Allowance for Loan _7

Loans and Allowance for Loan Losses - Summary of Breakdown of Allowance for Loan Losses and Loan Portfolio by Loan Category (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Allowance for Loan Losses:
Collectively evaluated for impairment	$ 19,397	$ 12,604
Individually evaluated for impairment	717
Allowance for Loan Losses, Ending Balance	20,114	12,604	$ 12,959	$ 12,113
Loans:
Collectively evaluated for impairment	1,440,989	1,414,903
Individually evaluated for impairment	4,275	3,594
Acquired with deteriorated credit quality	1,571	1,605
Total	1,446,835	1,420,102
Commercial real estate
Allowance for Loan Losses:
Collectively evaluated for impairment	4,183	3,599
Allowance for Loan Losses, Ending Balance	4,183	3,599	3,514	3,309
Loans:
Collectively evaluated for impairment	543,455	557,282
Individually evaluated for impairment	1,258	2,507
Acquired with deteriorated credit quality	109	110
Total	544,822	559,899
Consumer real estate
Allowance for Loan Losses:
Collectively evaluated for impairment	1,413	1,231
Allowance for Loan Losses, Ending Balance	1,413	1,231	1,017	1,005
Loans:
Collectively evaluated for impairment	247,247	255,006
Individually evaluated for impairment	436	483
Acquired with deteriorated credit quality	560	608
Total	248,243	256,097
Construction and land development
Allowance for Loan Losses:
Collectively evaluated for impairment	2,397	2,058
Individually evaluated for impairment	73
Allowance for Loan Losses, Ending Balance	2,470	2,058	2,366	2,431
Loans:
Collectively evaluated for impairment	140,975	142,994
Individually evaluated for impairment	109	112
Acquired with deteriorated credit quality	3	5
Total	141,087	143,111
Commercial and industrial
Allowance for Loan Losses:
Collectively evaluated for impairment	10,755	5,074
Individually evaluated for impairment	644
Allowance for Loan Losses, Ending Balance	11,399	5,074	5,524	5,036
Loans:
Collectively evaluated for impairment	443,959	393,057
Individually evaluated for impairment	2,468	487
Acquired with deteriorated credit quality	884	864
Total	447,311	394,408
Consumer
Allowance for Loan Losses:
Collectively evaluated for impairment	234	222
Allowance for Loan Losses, Ending Balance	234	222	139	105
Loans:
Collectively evaluated for impairment	27,720	28,403
Individually evaluated for impairment	4	5
Acquired with deteriorated credit quality	15	18
Total	27,739	28,426
Other
Allowance for Loan Losses:
Collectively evaluated for impairment	415	420
Allowance for Loan Losses, Ending Balance	415	420	$ 399	$ 227
Loans:
Collectively evaluated for impairment	37,633	38,161
Total	$ 37,633	$ 38,161

Loans and Allowance for Loan _8

Loans and Allowance for Loan Losses - Allocation of ALL with Corresponding Percentage of ALL in Each Category to Total Loans, Net of Deferred Fee (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 20,114	$ 12,604	$ 12,959	$ 12,113
Allowance for loan and lease losses, Percentage of total loans	1.39%	0.89%
Commercial real estate
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 4,183	$ 3,599	3,514	3,309
Allowance for loan and lease losses, Percentage of total loans	0.29%	0.25%
Consumer real estate
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 1,413	$ 1,231	1,017	1,005
Allowance for loan and lease losses, Percentage of total loans	0.10%	0.09%
Construction and land development
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 2,470	$ 2,058	2,366	2,431
Allowance for loan and lease losses, Percentage of total loans	0.17%	0.14%
Commercial and industrial
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 11,399	$ 5,074	5,524	5,036
Allowance for loan and lease losses, Percentage of total loans	0.79%	0.36%
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 234	$ 222	139	105
Allowance for loan and lease losses, Percentage of total loans	0.01%	0.02%
Other
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 415	$ 420	$ 399	$ 227
Allowance for loan and lease losses, Percentage of total loans	0.03%	0.03%

Loans and Allowance for Loan _9

Loans and Allowance for Loan Losses - Summary of Impaired Loans Evaluated for Specific Loss Allowance (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment	$ 3,413	$ 5,199
Impaired loans with no related allowance recorded, Unpaid principal balance	4,568	6,294
Impaired loans with an allowance recorded, Related allowance	717
Impaired loans with an allowance recorded, Recorded investment	2,433
Impaired loans with an allowance recorded, Unpaid principal balance	2,440
Recorded investment	5,846	5,199
Unpaid principal balance	7,008	6,294
Commercial real estate
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment	1,367	2,617
Impaired loans with no related allowance recorded, Unpaid principal balance	1,430	2,621
Consumer real estate
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment	996	1,091
Impaired loans with no related allowance recorded, Unpaid principal balance	1,226	1,327
Construction and land development
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment	3	117
Impaired loans with no related allowance recorded, Unpaid principal balance	13	132
Impaired loans with an allowance recorded, Related allowance	73
Impaired loans with an allowance recorded, Recorded investment	109
Impaired loans with an allowance recorded, Unpaid principal balance	114
Commercial and industrial
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment	1,028	1,351
Impaired loans with no related allowance recorded, Unpaid principal balance	1,862	2,173
Impaired loans with an allowance recorded, Related allowance	644
Impaired loans with an allowance recorded, Recorded investment	2,324
Impaired loans with an allowance recorded, Unpaid principal balance	2,326
Consumer
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment	19	23
Impaired loans with no related allowance recorded, Unpaid principal balance	$ 37	$ 41

Loans and Allowance for Loan_10

Loans and Allowance for Loan Losses - Summary of Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Average recorded investment	$ 4,262	$ 3,090
Impaired loans with no related allowance recorded, Interest income recognized	94	16
Impaired loans with an allowance recorded, Average recorded investment	3,459	777
Impaired loans with an allowance recorded, Interest income recognized	32
Average recorded investment	7,721	3,867
Interest income recognized	126	16
Commercial real estate
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Average recorded investment	2,044	1,381
Impaired loans with no related allowance recorded, Interest income recognized	31	16
Consumer real estate
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Average recorded investment	1,004	938
Impaired loans with no related allowance recorded, Interest income recognized	10
Construction and land development
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Average recorded investment	3	8
Impaired loans with an allowance recorded, Average recorded investment	110
Commercial and industrial
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Average recorded investment	1,191	724
Impaired loans with no related allowance recorded, Interest income recognized	52
Impaired loans with an allowance recorded, Average recorded investment	3,349	777
Impaired loans with an allowance recorded, Interest income recognized	32
Consumer
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Average recorded investment	20	$ 39
Impaired loans with no related allowance recorded, Interest income recognized	$ 1

Loans and Allowance for Loan_11

Loans and Allowance for Loan Losses - Schedule of Aging of Recorded Investment in Past-due Loans, by Class of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 8,904	$ 7,624
Loans Not Past Due	1,437,931	1,412,478
Total	1,446,835	1,420,102
Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	713	372
Loans Not Past Due	544,109	559,527
Total	544,822	559,899
Consumer real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	4,139	4,759
Loans Not Past Due	244,104	251,338
Total	248,243	256,097
Construction and land development
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,051	668
Loans Not Past Due	140,036	142,443
Total	141,087	143,111
Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,909	1,725
Loans Not Past Due	444,402	392,683
Total	447,311	394,408
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	72	100
Loans Not Past Due	27,667	28,326
Total	27,739	28,426
Other
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	20
Loans Not Past Due	37,613	38,161
Total	37,633	38,161
30 - 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	7,082	6,011
30 - 59 Days Past Due | Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	214	372
30 - 59 Days Past Due | Consumer real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	3,253	3,642
30 - 59 Days Past Due | Construction and land development
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,051	653
30 - 59 Days Past Due | Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,499	1,277
30 - 59 Days Past Due | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	45	67
30 - 59 Days Past Due | Other
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	20
60 - 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	586	497
60 - 89 Days Past Due | Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	441
60 - 89 Days Past Due | Consumer real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	124	474
60 - 89 Days Past Due | Construction and land development
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		15
60 - 89 Days Past Due | Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		8
60 - 89 Days Past Due | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	21
Greater than 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,236	1,116
Greater than 89 Days Past Due | Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	58
Greater than 89 Days Past Due | Consumer real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	762	643
Greater than 89 Days Past Due | Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	410	440
Greater than 89 Days Past Due | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 6	$ 33

Loans and Allowance for Loan_12

Loans and Allowance for Loan Losses - Schedule of Non-Accrual Loans, Past Due Loans over 89 Days and Accruing and Troubled Debt Restructurings (TDR) by Class of Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual	$ 3,658	$ 1,464
Past Due Over 89 Days and Accruing	399	38
Troubled Debt Restructurings	1,306	2,717
Commercial real estate
Accounts Notes And Loans Receivable [Line Items]
Past Due Over 89 Days and Accruing	58
Troubled Debt Restructurings	1,256	2,446
Consumer real estate
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual	844	894
Past Due Over 89 Days and Accruing	291	12
Construction and Land Development
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual	112	117
Commercial and industrial
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual	2,691	440
Past Due Over 89 Days and Accruing	50
Troubled Debt Restructurings	50	271
Consumer
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual	$ 11	13
Past Due Over 89 Days and Accruing		$ 26

Loans and Allowance for Loan_13

Loans and Allowance for Loan Losses - Schedule of Activity in Purchased Credit Impaired Loans (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Movement Schedule [Line Items]
Balance, beginning , carrying value	$ 1,605
Change due to payments received and accretion	(34)
Balance, ending, carrying value	1,571
Accretable Yield For PCI Loans
Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Movement Schedule [Line Items]
Balance, beginning , carrying value	915
Accretion	(34)
Other	(4)
Balance, ending, carrying value	$ 877

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Property Plant And Equipment [Abstract]
Operating lease, liability	$ 12,172,000
Operating lease, right-of-use asset	$ 11,400,000
Operating lease, weighted average remaining lease term	10 years 2 months 12 days
Operating lease, weighted average discount rate, percent	3.52%
Sale and leaseback transaction	$ 0	$ 0

Premises and Equipment - Summar

Premises and Equipment - Summary of Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Property Plant And Equipment [Abstract]
Operating lease cost	$ 478	$ 482
Total lease cost	$ 478	$ 482

Premises and Equipment - Maturi

Premises and Equipment - Maturity Analysis of Operating Lease Liabilities and Reconciliation of Undiscounted Cash Flows (Details) $ in Thousands	Mar. 31, 2020USD ($)
Lease payments due:
2020	$ 1,174
2021	1,590
2022	1,476
2023	1,425
2024	1,130
2025 and thereafter	7,710
Total undiscounted cash flows	14,505
Discount on cash flows	(2,333)
Operating lease, liability	$ 12,172

Federal Home Loan Bank Advanc_3

Federal Home Loan Bank Advances - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Federal Home Loan Bank Advances [Line Items]
Outstanding borrowings	$ 10,000	$ 10,000
Investment securities, FHLB stock and commercial and residential real estate mortgage loans
Federal Home Loan Bank Advances [Line Items]
Federal Home Loan Bank Advances Collateralized Investment Securities Value	3,200
Mortgage loans collateralized amount	663,500
Amount of available credit	$ 195,400

Federal Home Loan Bank Advanc_4

Federal Home Loan Bank Advances - Summary of Contractual Maturities and Average Effective Rates of Outstanding Advances (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Federal Home Loan Bank Advances Maturities Summary [Abstract]
2020	$ 10,000	$ 10,000
Total amount	$ 10,000	$ 10,000
2020	1.37%	2.05%
Total interest rates	1.37%	2.05%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Summary of Changes In Accumulated Other Comprehensive Income (Loss) By Component, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ 273,046	$ 254,379
Other comprehensive income before reclassification	3,175	2,233
Amounts reclassified from accumulated other comprehensive income	233	179
Other comprehensive income	3,408	2,412
Ending balance	275,790	259,751
Gains and Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(2,679)	(2,636)
Other comprehensive income before reclassification		(178)
Amounts reclassified from accumulated other comprehensive income	253	188
Other comprehensive income	253	10
Ending balance	(2,426)	(2,626)
Unrealized Gains and Losses on Available for Sale Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	4,062	(680)
Other comprehensive income before reclassification	3,175	2,411
Amounts reclassified from accumulated other comprehensive income	(20)	(9)
Other comprehensive income	3,155	2,402
Ending balance	7,217	1,722
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	1,383	(3,316)
Other comprehensive income	3,408	2,412
Ending balance	$ 4,791	$ (904)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Summary of Significant Amounts Reclassified out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Net (gain) loss on sale of securities	$ 27	$ 12
Interest expense - Federal Home Loan Bank advances	(144)	(831)
Income tax benefit (expense)	575	(1,346)
Net income	1,346	4,780
Reclassification out of Accumulated Other Comprehensive Income | Realized Losses on Cash Flow Hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Interest expense money market	(201)	(110)
Interest expense - Federal Home Loan Bank advances	(52)	(87)
Income tax benefit (expense)		9
Net income	(253)	(188)
Reclassification out of Accumulated Other Comprehensive Income | Realized Gains on Available-for-sale Securities
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Net (gain) loss on sale of securities	27	12
Income tax benefit (expense)	(7)	(3)
Net income	$ 20	$ 9

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Taxes [Line Items]
Effective tax rate	(74.60%)	22.00%
Federal statutory income tax rate	21.00%
CARES act of 2020, net operating loss carryback period	5 years
CARES act of 2020 net operating loss income tax benefit	$ 0.8
Tennessee | State and Local Jurisdiction
Income Taxes [Line Items]
Excise tax rate	6.50%

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Financial Instruments Representing Credit Risk (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Unused commitments to extend credit	$ 657,182	$ 672,933
Standby letters of credit	9,893	9,634
Total	$ 667,075	$ 682,567

Derivatives - Additional Inform

Derivatives - Additional Information (Details) - Designated as Hedging Instrument - Interest Rate Swaps - Cash Flow Hedges - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2019	Mar. 31, 2020
Derivative [Line Items]
Notional amount		$ 0	$ 0
Derivative termination fees		$ 1,500,000
Gains (losses) relating to mortgage banking derivative instruments	$ 0

Derivatives - Summary of Custom

Derivatives - Summary of Customer Related Interest Rate Swaps (Details) - Interest Rate Swaps - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Interest rate swap, Notional amount	$ 89,340,000	$ 90,106,000
Pay fixed/receive variable swaps
Derivative [Line Items]
Interest rate swap, Notional amount	44,670,000	45,053,000
Interest rate swap, Estimated fair value	(2,684,000)	(926,000)
Pay variable/receive fixed swaps
Derivative [Line Items]
Interest rate swap, Notional amount	44,670,000	45,053,000
Interest rate swap, Estimated fair value	$ 2,684,000	$ 926,000

Derivatives - Summary of Net Ga

Derivatives - Summary of Net Gains (Losses) Relating to Mortgage Banking Derivative Instruments Included in Mortgage Banking Income (Details) - Mortgage Banking Derivative Instruments $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Derivative [Line Items]
Net gains (losses) relating to mortgage banking derivative instruments	$ (495)
Mortgage Loan Interest Rate Lock Commitments
Derivative [Line Items]
Net gains (losses) relating to mortgage banking derivative instruments	1,192
Mortgage-Backed Securities Forward Sales Commitments
Derivative [Line Items]
Net gains (losses) relating to mortgage banking derivative instruments	$ (1,687)

Derivatives - Summary of Amount

Derivatives - Summary of Amount and Fair Value of Mortgage Banking Derivative Instruments Included in Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Other Assets | Mortgage Loan Interest Rate Lock Commitments
Derivative [Line Items]
Notional amount, assets	$ 118,310	$ 44,694
Estimated fair value, asset	1,840	648
Other Liabilities | Mortgage-Backed Securities Forward Sales Commitments
Derivative [Line Items]
Notional amount, liabilities	85,500	38,500
Estimated fair value, liabilities	$ 1,836	$ 148

Stock Options and Restricted _3

Stock Options and Restricted Shares - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost	$ 1.5
Total fair value of shares vested	$ 0.6	$ 0.8
Vesting period	3 years
Contractual term	10 years
Options granted	0		50,000
Unrecognized compensation cost	$ 0.2
Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cost expected to be recognized over a weighted-average period	1 year 9 months 18 days
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cost expected to be recognized over a weighted-average period	2 years 1 month 6 days
CapStar Bank 2008 Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of stock reserved for issuance of stock incentives	1,569,475
Shares issuable under both restricted share and stock option grants	301,921
CapStar Bank 2008 Stock Incentive Plan | Board of Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of stock reserved for issuance of stock incentives				400,000

Stock Options and Restricted _4

Stock Options and Restricted Shares - Summary of Company Recognized Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-based compensation expense before income taxes	$ 360	$ 344
Less: deferred tax benefit	(94)	(90)
Reduction of net income	$ 266	$ 254

Stock Options and Restricted _5

Stock Options and Restricted Shares - Summary of Changes in Company's Nonvested Restricted Shares (Details)	3 Months Ended
	Mar. 31, 2020$ / sharesshares
Restricted Shares, Abstract
Restricted Shares, Nonvested Beginning Balance | shares	84,697
Restricted Shares, Granted | shares	83,493
Restricted Shares, Vested | shares	(41,886)
Restricted Shares, Forfeited | shares	(2,657)
Restricted Shares, Nonvested Ending Balance | shares	123,647
Weighted Average Grant Date Fair Value, Abstract
Weighted Average Grant Date Fair Value, Nonvested Beginning Balance | $ / shares	$ 17.44
Weighted Average Grant Date Fair Value, Granted | $ / shares	14.42
Weighted Average Grant Date Fair Value, Vested | $ / shares	16.61
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	15.66
Weighted Average Grant Date Fair Value, Nonvested Ending Balance | $ / shares	$ 15.72

Stock Options and Restricted _6

Stock Options and Restricted Shares - Summary of Fair Value of Options Granted Using Weighted Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Dividend yield	1.35%
Expected term (in years)	6 years 6 months
Expected stock price volatility	29.55%
Risk-free interest rate	2.25%

Stock Options and Restricted _7

Stock Options and Restricted Shares - Summary of Activity in Stock Options (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Shares, Abstract
Shares Outstanding, Beginning Balance	271,202
Shares Outstanding, Granted	0	50,000
Shares Outstanding, Exercised	(24,613)
Shares Outstanding, Forfeited or Expired	(20,000)
Shares Outstanding, Ending Balance	226,589	271,202
Shares, Fully Vested and Expected to Vest	226,589
Shares, Exercisable at End of Period	176,589
Weighted Average Exercise Price, Abstract
Weighted Average Exercise Price Outstanding, Beginning Balance	$ 11.22
Weighted Average Exercise Price Outstanding, Exercised	6.75
Weighted Average Exercise Price Outstanding, Forfeited or expired	10.92
Weighted Average Exercise Price Outstanding, Ending Balance	11.73	$ 11.22
Weighted Average Exercise Price, Fully vested and expected to vest	11.73
Weighted Average Exercise Price, Exercisable at End of Period	$ 10.85
Weighted Average Remaining Contractual Term (year), Abstract
Weighted Average Remaining Contractual Term Outstanding	5 years 4 months 24 days
Weighted Average Remaining Contractual Term, Fully Vested and Expected to Vest	5 years 4 months 24 days
Weighted Average Remaining Contractual Term, Exercisable at End of Period	4 years 4 months 24 days

Stock Options and Restricted _8

Stock Options and Restricted Shares - Information Related to Stock Options (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Intrinsic value of options exercised	$ 188,662	$ 1,733,087
Cash received from option exercises	105,847	1,179,923
Tax benefit realized from option exercises	$ 16,524	$ 15,411

Regulatory Capital Requiremen_3

Regulatory Capital Requirements - Schedule of Capital Amounts and Ratios (Details) - USD ($) $ in Thousands		Mar. 31, 2020	Dec. 31, 2019
CapStar Financial Holdings, Inc.
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital to risk-weighted assets, actual amount		$ 245,991	$ 237,857
Tier I capital to risk-weighted assets, actual amount		225,698	225,074
Tier I capital to average assets, actual amount		$ 225,698	$ 225,074
Total capital to risk-weighted assets, actual ratio		13.68%	13.45%
Tier I capital to risk-weighted assets, actual ratio		12.56%	12.73%
Tier I capital to average assets, actual ratio		11.23%	11.37%
Total capital to risk-weighted assets, minimum capital requirement amount	[1]	$ 143,806	$ 141,436
Tier I capital to risk-weighted assets, minimum capital requirement amount	[1]	107,854	106,077
Tier I capital to average assets, minimum capital requirement amount	[1]	$ 80,379	$ 79,201
Total capital to risk-weighted assets, minimum capital requirement ratio	[1]	8.00%	8.00%
Tier I capital to risk-weighted assets, minimum capital requirement ratio	[1]	6.00%	6.00%
Tier I capital to average assets, minimum capital requirement ratio	[1]	4.00%	4.00%
CapStar Financial Holdings, Inc. | Common Stock
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier I capital to risk-weighted assets, actual amount		$ 225,698	$ 225,074
Tier I capital to risk-weighted assets, actual ratio		12.56%	12.73%
Tier I capital to risk-weighted assets, minimum capital requirement amount	[1]	$ 80,891	$ 79,558
Tier I capital to risk-weighted assets, minimum capital requirement ratio	[1]	4.50%	4.50%
CapStar Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital to risk-weighted assets, actual amount		$ 234,048	$ 224,443
Tier I capital to risk-weighted assets, actual amount		213,755	211,660
Tier I capital to average assets, actual amount		$ 213,755	$ 211,660
Total capital to risk-weighted assets, actual ratio		13.02%	12.70%
Tier I capital to risk-weighted assets, actual ratio		11.90%	11.98%
Tier I capital to average assets, actual ratio		10.64%	10.70%
Total capital to risk-weighted assets, minimum capital requirement amount	[1]	$ 143,757	$ 141,388
Tier I capital to risk-weighted assets, minimum capital requirement amount	[1]	107,818	106,041
Tier I capital to average assets, minimum capital requirement amount	[1]	$ 80,346	$ 79,150
Total capital to risk-weighted assets, minimum capital requirement ratio	[1]	8.00%	8.00%
Tier I capital to risk-weighted assets, minimum capital requirement ratio	[1]	6.00%	6.00%
Tier I capital to average assets, minimum capital requirement ratio	[1]	4.00%	4.00%
Total capital to risk-weighted assets, minimum to be well capitalized amount	[2]	$ 179,696	$ 176,735
Tier I capital to risk-weighted assets, minimum to be well capitalized amount	[2]	143,757	141,388
Tier I capital to average assets, minimum to be well capitalized amount	[2]	$ 100,432	$ 98,938
Total capital to risk-weighted assets, minimum to be well capitalized ratio	[2]	10.00%	10.00%
Tier I capital to risk-weighted assets, minimum to be well capitalized ratio	[2]	8.00%	8.00%
Tier I capital to average assets, minimum to be well capitalized ratio	[2]	5.00%	5.00%
CapStar Bank | Common Stock
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier I capital to risk-weighted assets, actual amount		$ 197,255	$ 195,160
Tier I capital to risk-weighted assets, actual ratio		10.98%	11.04%
Tier I capital to risk-weighted assets, minimum capital requirement amount	[1]	$ 80,863	$ 79,531
Tier I capital to risk-weighted assets, minimum capital requirement ratio	[1]	4.50%	4.50%
Tier I capital to risk-weighted assets, minimum to be well capitalized amount	[2]	$ 116,802	$ 114,878
Tier I capital to risk-weighted assets, minimum to be well capitalized ratio	[2]	6.50%	6.50%
[1]	For the calendar year 2020, the Company must maintain a capital conservation buffer of Tier 1 common equity capital in excess of minimum risk-based capital ratios by at least 2.5% to avoid limits on capital distributions and certain discretionary bonus payments to executive officers and similar employees.
[2]	For the Company to be well-capitalized, the Bank must be well-capitalized and the Company must not be subject to any written agreement, order, capital directive, or prompt corrective action directive issued by the Federal Reserve to meet and maintain a specific capital level for any capital measure.

Regulatory Capital Requiremen_4

Regulatory Capital Requirements - Schedule of Capital Amounts and Ratios (Parenthetical) (Details)	Mar. 31, 2020
Banking And Thrift [Abstract]
Minimum risk based capital ratios	2.50%

Earnings Per Share - Summary of

Earnings Per Share - Summary of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Basic net income per share calculation:
Numerator – Net income	$ 1,346	$ 4,780
Denominator – Average common shares outstanding	18,392,913	17,783,239
Basic net income per share	$ 0.07	$ 0.27
Diluted net income per share calculation:
Numerator – Net income	$ 1,346	$ 4,780
Denominator – Average common shares outstanding	18,392,913	17,783,239
Dilutive shares contingently issuable	50,812	1,047,694
Average diluted common shares outstanding	18,443,725	18,830,933
Diluted net income per share	$ 0.07	$ 0.25

Fair Value - Additional Informa

Fair Value - Additional Information (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Impaired loans marked to fair value		$ 0
Other real estate owned	$ 0	$ 0

Fair Value - Summary of Assets

Fair Value - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets:
Securities available-for-sale, at fair value	$ 219,213	$ 213,129
Loans held for sale carried at fair value	54,896	30,740
Obligations of States and Political Subdivisions
Assets:
Securities available-for-sale, at fair value	45,132	45,960
Asset-backed securities
Assets:
Securities available-for-sale, at fair value	3,043	3,197
Other debt securities
Assets:
Securities available-for-sale, at fair value	17,403	14,962
Significant Unobservable Inputs (Level 3) | Mortgage Loan Interest Rate Lock Commitments | Non-hedging derivatives
Derivative assets:
Mortgage loan interest rate lock commitments	1,840	648
Fair Value Measurements Recurring Basis
Assets:
Loans held for sale carried at fair value	54,896	30,740
Fair Value Measurements Recurring Basis | U.S. Government-sponsored Agencies
Assets:
Securities available-for-sale, at fair value	12,086	10,331
Fair Value Measurements Recurring Basis | Obligations of States and Political Subdivisions
Assets:
Securities available-for-sale, at fair value	45,132	45,960
Fair Value Measurements Recurring Basis | Mortgage-backed Securities-residential
Assets:
Securities available-for-sale, at fair value	141,549	138,679
Fair Value Measurements Recurring Basis | Asset-backed securities
Assets:
Securities available-for-sale, at fair value	3,043	3,197
Fair Value Measurements Recurring Basis | Other debt securities
Assets:
Securities available-for-sale, at fair value	17,403	14,962
Fair Value Measurements Recurring Basis | Mortgage Loan Interest Rate Lock Commitments | Non-hedging derivatives
Derivative assets:
Mortgage loan interest rate lock commitments	1,840	648
Fair Value Measurements Recurring Basis | Forward Sales Commitments | Non-hedging derivatives
Derivative liabilities:
Mortgage-backed securities forward sales commitments	(1,836)	(148)
Fair Value Measurements Recurring Basis | Interest Rate Swaps - Customer Related | Non-hedging derivatives
Assets:
Interest rate swaps - customer related	2,684	926
Derivative liabilities:
Total derivatives	(2,684)	(926)
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2)
Assets:
Loans held for sale carried at fair value	54,896	30,740
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | U.S. Government-sponsored Agencies
Assets:
Securities available-for-sale, at fair value	12,086	10,331
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | Obligations of States and Political Subdivisions
Assets:
Securities available-for-sale, at fair value	45,132	45,960
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed Securities-residential
Assets:
Securities available-for-sale, at fair value	141,549	138,679
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | Asset-backed securities
Assets:
Securities available-for-sale, at fair value	3,043	3,197
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | Other debt securities
Assets:
Securities available-for-sale, at fair value	17,403	14,962
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | Forward Sales Commitments | Non-hedging derivatives
Derivative liabilities:
Mortgage-backed securities forward sales commitments	(1,836)	(148)
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | Interest Rate Swaps - Customer Related | Non-hedging derivatives
Assets:
Interest rate swaps - customer related	2,684	926
Derivative liabilities:
Total derivatives	(2,684)	(926)
Fair Value Measurements Recurring Basis | Significant Unobservable Inputs (Level 3) | Mortgage Loan Interest Rate Lock Commitments | Non-hedging derivatives
Derivative assets:
Mortgage loan interest rate lock commitments	$ 1,840	$ 648

Fair Value - Reconciliation of

Fair Value - Reconciliation of Assets Measured at Fair Value on Recurring Basis using Significant Unobservable Inputs (Level 3) (Details) - Mortgage Loan Interest Rate Lock Commitments - Significant Unobservable Inputs (Level 3) - Fair Value Measurements Recurring Basis $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Balance of recurring Level 3 assets at January 1st	$ 648
Included in mortgage banking income	1,192
Balance of recurring Level 3 assets at March 31st	$ 1,840

Fair Value - Summary of Quantit

Fair Value - Summary of Quantitative Information About Level 3 Fair Value Measurements on Recurring and Non-recurring Basis (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Construction and land development | Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	$ 36
Commercial and industrial | Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	$ 1,682
Significant Unobservable Inputs (Level 3) | Construction and land development | Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Valuation Technique(s)	Sales comparison approach
Unobservable Input(s)	Appraisal discounts
Impaired loans	$ 36
Significant Unobservable Inputs (Level 3) | Commercial and industrial | Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Valuation Technique(s)	Discounted cash flow method
Unobservable Input(s)	Scheduled cash collection, discount rate
Impaired loans	$ 1,682
Significant Unobservable Inputs (Level 3) | Weighted Average | Construction and land development | Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable inputs range	0.0010
Significant Unobservable Inputs (Level 3) | Weighted Average | Commercial and industrial | Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable inputs range	0.0007
Significant Unobservable Inputs (Level 3) | Mortgage Loan Interest Rate Lock Commitments | Non-hedging derivatives
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Mortgage loan interest rate lock commitments	$ 1,840	$ 648
Valuation Technique(s)	Consensus pricing	Consensus pricing
Unobservable Input(s)	Origination pull-through rate	Origination pull-through rate
Significant Unobservable Inputs (Level 3) | Mortgage Loan Interest Rate Lock Commitments | Non-hedging derivatives | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable inputs range	0.0048	0.0068
Significant Unobservable Inputs (Level 3) | Mortgage Loan Interest Rate Lock Commitments | Non-hedging derivatives | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable inputs range	0.0098	0.0095
Significant Unobservable Inputs (Level 3) | Mortgage Loan Interest Rate Lock Commitments | Non-hedging derivatives | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable inputs range	0.0076	0.0083

Fair Value - Summary of Asset_2

Fair Value - Summary of Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Nonrecurring $ in Thousands	Mar. 31, 2020USD ($)
Construction and land development
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	$ 36
Commercial and industrial
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	1,682
Significant Unobservable Inputs (Level 3) | Construction and land development
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	36
Significant Unobservable Inputs (Level 3) | Commercial and industrial
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	$ 1,682

Fair Value - Summary of Carryin

Fair Value - Summary of Carrying Value and Fair Values of the Bank's Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financial assets:
Securities available-for-sale	$ 219,213	$ 213,129
Securities held to maturity, fair value	3,394	3,411
Loans held for sale carried at fair value	54,896	30,740
Carrying amount
Financial assets:
Cash and due from banks, interest-bearing deposits in financial institutions	91,450	101,094
Federal funds sold		175
Securities available-for-sale	219,213	213,129
Securities held to maturity, fair value	3,306	3,313
Loans held for sale carried at fair value	186,937	168,222
Restricted equity securities	13,573	13,689
Loans	1,446,835	1,420,102
Accrued interest receivable	5,786	5,792
Other assets	39,546	36,393
Financial liabilities:
Deposits	1,763,709	1,729,451
Federal Home Loan Bank advances	10,000	10,000
Other liabilities	2,684	1,394
Fair value
Financial assets:
Loans	1,459,047	1,414,757
Fair value | Level 1
Financial assets:
Cash and due from banks, interest-bearing deposits in financial institutions	91,450	101,094
Federal funds sold		175
Fair value | Level 2
Financial assets:
Securities available-for-sale	219,213	213,129
Securities held to maturity, fair value	3,394	3,411
Loans held for sale carried at fair value	188,588	169,072
Accrued interest receivable	5,786	5,792
Other assets	39,546	36,393
Financial liabilities:
Federal Home Loan Bank advances	10,029	10,014
Fair value | Level 3 Fair Value Measurements
Financial liabilities:
Deposits	1,766,699	1,730,206
Other liabilities	$ 2,684	$ 1,394